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Commit 2a498b39 authored by Sergey Petrunya's avatar Sergey Petrunya
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Merge: Make EXPLAIN better at displaying MRR/BKA

parents 69c5b501 d4ce8272
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mysql-test/r/ctype_collate.result
View file @ 2a498b39
......@@ -578,19 +578,19 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where
EXPLAIN SELECT * FROM t1 WHERE s1 BETWEEN 'a' AND 'b' COLLATE latin1_german1_ci;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range s1 s1 11 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range s1 s1 11 NULL 2 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE s2 BETWEEN 'a' AND 'b' COLLATE latin1_german1_ci;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where
EXPLAIN SELECT * FROM t1 WHERE s1 IN ('a','b' COLLATE latin1_german1_ci);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range s1 s1 11 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range s1 s1 11 NULL 2 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE s2 IN ('a','b' COLLATE latin1_german1_ci);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where
EXPLAIN SELECT * FROM t1 WHERE s1 LIKE 'a' COLLATE latin1_german1_ci;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range s1 s1 11 NULL 1 Using index condition; Using MRR
1 SIMPLE t1 range s1 s1 11 NULL 1 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE s2 LIKE 'a' COLLATE latin1_german1_ci;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL s2 NULL NULL NULL 10 Using where
......
mysql-test/r/func_in.result
View file @ 2a498b39
......@@ -241,7 +241,7 @@ insert into t2 select C.a*2+1, 'yes' from t1 C;
explain
select * from t2 where a NOT IN (0, 2,4,6,8,10,12,14,16,18);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 5 NULL 12 Using index condition; Using MRR
1 SIMPLE t2 range a a 5 NULL 12 Using index condition; Rowid-ordered scan
select * from t2 where a NOT IN (0, 2,4,6,8,10,12,14,16,18);
a filler
1 yes
......@@ -256,10 +256,10 @@ a filler
19 yes
explain select * from t2 force index(a) where a NOT IN (2,2,2,2,2,2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 5 NULL 912 Using index condition; Using MRR
1 SIMPLE t2 range a a 5 NULL 912 Using index condition; Rowid-ordered scan
explain select * from t2 force index(a) where a <> 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 5 NULL 912 Using index condition; Using MRR
1 SIMPLE t2 range a a 5 NULL 912 Using index condition; Rowid-ordered scan
drop table t2;
create table t2 (a datetime, filler char(200), key(a));
insert into t2 select '2006-04-25 10:00:00' + interval C.a minute,
......@@ -271,7 +271,7 @@ select * from t2 where a NOT IN (
'2006-04-25 10:00:00','2006-04-25 10:02:00','2006-04-25 10:04:00',
'2006-04-25 10:06:00', '2006-04-25 10:08:00');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 9 NULL 18 Using index condition; Using MRR
1 SIMPLE t2 range a a 9 NULL 18 Using index condition; Rowid-ordered scan
select * from t2 where a NOT IN (
'2006-04-25 10:00:00','2006-04-25 10:02:00','2006-04-25 10:04:00',
'2006-04-25 10:06:00', '2006-04-25 10:08:00');
......@@ -295,7 +295,7 @@ insert into t2 values ('fon', '1'), ('fop','1'), ('barbaq','1'),
('barbas','1'), ('bazbazbay', '1'),('zz','1');
explain select * from t2 where a not in('foo','barbar', 'bazbazbaz');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 13 NULL 7 Using index condition; Using MRR
1 SIMPLE t2 range a a 13 NULL 7 Using index condition; Rowid-ordered scan
drop table t2;
create table t2 (a decimal(10,5), filler char(200), key(a));
insert into t2 select 345.67890, 'no' from t1 A, t1 B;
......@@ -306,7 +306,7 @@ insert into t2 values (0, '1'), (22334.123,'1'), (33333,'1'),
explain
select * from t2 where a not in (345.67890, 43245.34, 64224.56344);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 7 NULL 7 Using index condition; Using MRR
1 SIMPLE t2 range a a 7 NULL 7 Using index condition; Rowid-ordered scan
select * from t2 where a not in (345.67890, 43245.34, 64224.56344);
a filler
0.00000 1
......@@ -630,16 +630,16 @@ INSERT INTO t1 (c_int) SELECT 0 FROM t1;
INSERT INTO t1 (c_int) SELECT 0 FROM t1;
EXPLAIN SELECT * FROM t1 WHERE c_int IN (1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_int IN (NULL, 1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_int IN (1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_int IN (1, NULL, 2, NULL, 3, NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_int c_int 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_int IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -648,10 +648,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN SELECT * FROM t1 WHERE c_decimal IN (1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_decimal IN (NULL, 1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_decimal c_decimal 3 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_decimal IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -660,10 +660,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN SELECT * FROM t1 WHERE c_float IN (1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_float c_float 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_float c_float 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_float IN (NULL, 1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_float c_float 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_float c_float 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_float IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -672,10 +672,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN SELECT * FROM t1 WHERE c_bit IN (1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_bit IN (NULL, 1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_bit c_bit 2 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_bit IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -685,11 +685,11 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT * FROM t1 WHERE c_date
IN ('2009-09-01', '2009-09-02', '2009-09-03');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_date c_date 3 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_date c_date 3 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_date
IN (NULL, '2009-09-01', '2009-09-02', '2009-09-03');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_date c_date 3 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_date c_date 3 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_date IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -699,11 +699,11 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT * FROM t1 WHERE c_datetime
IN ('2009-09-01 00:00:01', '2009-09-02 00:00:01', '2009-09-03 00:00:01');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_datetime
IN (NULL, '2009-09-01 00:00:01', '2009-09-02 00:00:01', '2009-09-03 00:00:01');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_datetime c_datetime 8 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_datetime IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -713,11 +713,11 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT * FROM t1 WHERE c_timestamp
IN ('2009-09-01 00:00:01', '2009-09-01 00:00:02', '2009-09-01 00:00:03');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_timestamp
IN (NULL, '2009-09-01 00:00:01', '2009-09-01 00:00:02', '2009-09-01 00:00:03');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_timestamp c_timestamp 4 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_timestamp IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -726,10 +726,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN SELECT * FROM t1 WHERE c_year IN (1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_year c_year 1 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_year c_year 1 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_year IN (NULL, 1, 2, 3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_year c_year 1 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_year c_year 1 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_year IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -738,10 +738,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN SELECT * FROM t1 WHERE c_char IN ('1', '2', '3');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_char c_char 10 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_char c_char 10 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_char IN (NULL, '1', '2', '3');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c_char c_char 10 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range c_char c_char 10 NULL 3 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE c_char IN (NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......
mysql-test/r/index_intersect.result
View file @ 2a498b39
......@@ -74,12 +74,12 @@ EXPLAIN
SELECT * FROM City
WHERE Name LIKE 'M%' AND Population > 300000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Name Name 35 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Name Name 35 NULL # Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE Name LIKE 'M%' AND Population > 7000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Name Population 4 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Name Population 4 NULL # Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE Name LIKE 'C%' AND Population > 1000000;
ID Name Country Population
......@@ -371,7 +371,7 @@ EXPLAIN
SELECT * FROM City
WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Name 35 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Name 35 NULL # Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%';
ID Name Country Population
......@@ -462,7 +462,7 @@ EXPLAIN
SELECT * FROM City
WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%';
......@@ -472,7 +472,7 @@ EXPLAIN
SELECT * FROM City
WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country Country 3 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country Country 3 NULL # Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ID BETWEEN 3701 AND 4000 AND Population > 1000000
......@@ -484,7 +484,7 @@ SELECT * FROM City
WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000
AND Country BETWEEN 'S' AND 'Z' ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%';
ID Name Country Population
......@@ -733,7 +733,7 @@ EXPLAIN
SELECT * FROM City
WHERE Name BETWEEN 'G' AND 'J' AND Population > 500000 AND Country LIKE 'C%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Name 35 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Name 35 NULL # Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%';
......@@ -744,7 +744,7 @@ SELECT * FROM City
WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000
AND Country BETWEEN 'S' AND 'Z';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country Population 4 NULL # Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City WHERE
Name LIKE 'C%' AND Population > 1000000;
ID Name Country Population
......@@ -1028,7 +1028,7 @@ EXPLAIN
SELECT * FROM t1
WHERE (f1 < 535 OR f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,f4 f4 35 NULL # Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY,f4 f4 35 NULL # Using index condition; Using where; Rowid-ordered scan
SELECT * FROM t1
WHERE (f1 < 535 OR f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ;
f1 f4 f5
......
mysql-test/r/index_merge_myisam.result
View file @ 2a498b39
......@@ -21,7 +21,7 @@ Table Op Msg_type Msg_text
test.t0 analyze status OK
explain select * from t0 where key1 < 3 or key1 > 1020;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 range i1 i1 4 NULL 78 Using index condition; Using MRR
1 SIMPLE t0 range i1 i1 4 NULL 78 Using index condition; Rowid-ordered scan
explain
select * from t0 where key1 < 3 or key2 > 1020;
id select_type table type possible_keys key key_len ref rows Extra
......@@ -74,7 +74,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 17 Using sort_union(i1,i2); Using where
explain select * from t0 where key2 = 45 or key1 <=> null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 range i1,i2 i2 4 NULL 1 Using where; Using MRR
1 SIMPLE t0 range i1,i2 i2 4 NULL 1 Using where; Rowid-ordered scan
explain select * from t0 where key2 = 45 or key1 is not null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL i1,i2 NULL NULL NULL 1024 Using where
......@@ -277,7 +277,7 @@ id select_type table type possible_keys key key_len ref rows Extra
explain select * from t0,t1 where t0.key1 < 3 and
(t1.key1 = t0.key1 or t1.key8 = t0.key1);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 range i1 i1 4 NULL 3 Using index condition; Using MRR
1 SIMPLE t0 range i1 i1 4 NULL 3 Using index condition; Rowid-ordered scan
1 SIMPLE t1 ALL i1,i8 NULL NULL NULL 1024 Range checked for each record (index map: 0x81)
explain select * from t1 where key1=3 or key2=4
union select * from t1 where key1<4 or key3=5;
......@@ -1379,7 +1379,7 @@ primary key (pk1, pk2)
);
explain select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 7 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 7 Using index condition; Using where; Rowid-ordered scan
select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
pk1 pk2 key1 key2 pktail1ok pktail2ok pktail3bad pktail4bad pktail5bad pk2copy badkey filler1 filler2
1 19 0 0 0 0 0 0 0 19 0 filler-data-19 filler2
......
mysql-test/r/innodb.result
View file @ 2a498b39
......@@ -1295,7 +1295,7 @@ count(*)
623
explain select * from t1 where c between 1 and 2500;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL # Using index condition; Using MRR
1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan
update t1 set c=a;
explain select * from t1 where c between 1 and 2500;
id select_type table type possible_keys key key_len ref rows Extra
......
mysql-test/r/innodb_mrr.result
View file @ 2a498b39
......@@ -184,7 +184,7 @@ explain
select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
or c='no-such-row2');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Using MRR
1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Rowid-ordered scan
select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
or c='no-such-row2');
a b c filler
......@@ -206,7 +206,7 @@ NULL NULL NULL NULL-1
explain
select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Using MRR
1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Rowid-ordered scan
select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
a b c filler
b-1 NULL c-1 NULL-15
......@@ -309,7 +309,7 @@ from t1 A, t1 B, t1 C;
explain
select count(length(a) + length(filler)) from t2 where a>='a-1000-a' and a <'a-1001-a';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 9 NULL 99 Using index condition; Using MRR
1 SIMPLE t2 range a a 9 NULL 99 Using index condition; Rowid-ordered scan
select count(length(a) + length(filler)) from t2 where a>='a-1000-a' and a <'a-1001-a';
count(length(a) + length(filler))
100
......@@ -319,7 +319,7 @@ filler char(10), key(d), primary key (a,b,c)) engine= innodb;
insert into t2 select A.a, B.a, B.a, A.a, 'filler' from t1 A, t1 B;
explain select * from t2 force index (d) where d < 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range d d 5 NULL # Using index condition; Using MRR
1 SIMPLE t2 range d d 5 NULL # Using index condition; Rowid-ordered scan
drop table t2;
drop table t1;
set @@mrr_buffer_size= @mrr_buffer_size_save;
......
mysql-test/r/innodb_mrr_cpk.result
View file @ 2a498b39
......@@ -25,7 +25,7 @@ This should use join buffer:
explain select * from t1, t2 where t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 8 test.t2.a 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 8 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered scan
This output must be sorted by value of t1.a:
select * from t1, t2 where t1.a=t2.a;
a b filler a
......@@ -47,7 +47,7 @@ insert into t2 values ('a-1010=A', 1010), ('a-1030=A', 1030), ('a-1020=A', 1020)
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
a b filler a b
a-1010=A 1010 filler a-1010=A 1010
......@@ -57,7 +57,7 @@ insert into t2 values ('a-1030=A', 1030), ('a-1020=A', 1020);
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
a b filler a b
a-1010=A 1010 filler a-1010=A 1010
......@@ -80,7 +80,7 @@ insert into t2 values ('a-1010=A', 1010), ('a-1030=A', 1030), ('a-1020=A', 1020)
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 30 test.t2.a,test.t2.b 1 Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 30 test.t2.a,test.t2.b 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
a b filler a b
a-1010=A 1010 filler a-1010=A 1010
......@@ -89,7 +89,7 @@ a-1030=A 1030 filler a-1030=A 1030
explain select * from t1, t2 where t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 ref PRIMARY PRIMARY 26 test.t2.a 1 Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t1 ref PRIMARY PRIMARY 26 test.t2.a 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a;
a b filler a b
a-1010=A 1010 filler a-1010=A 1010
......@@ -109,7 +109,7 @@ insert into t2 values (11,33), (11,22), (11,11);
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 ref PRIMARY PRIMARY 8 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 ref PRIMARY PRIMARY 8 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
a b c filler a b
11 11 11 filler 11 11
......@@ -131,14 +131,14 @@ set join_cache_level=6;
explain select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
a b c filler a b
set optimizer_switch='index_condition_pushdown=off';
explain select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered scan
select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
a b c filler a b
set optimizer_switch='index_condition_pushdown=on';
......
mysql-test/r/join_cache.result
View file @ 2a498b39
......@@ -397,7 +397,7 @@ ON City.Country=Country.Code AND City.Population > 5000000
WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
1 SIMPLE City hash_range City_Population #hash#$hj:City_Population 3:4 world.Country.Code 25 Using where; Using MRR; Using join buffer (flat, BNLH join)
1 SIMPLE City hash_range City_Population #hash#$hj:City_Population 3:4 world.Country.Code 25 Using where; Rowid-ordered scan; Using join buffer (flat, BNLH join)
SELECT Country.Name, Country.Population, City.Name, City.Population
FROM Country LEFT JOIN City
ON City.Country=Country.Code AND City.Population > 5000000
......@@ -813,7 +813,7 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
......@@ -887,7 +887,7 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
......@@ -1013,7 +1013,7 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
......@@ -1087,7 +1087,7 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
......@@ -1207,8 +1207,8 @@ FROM Country LEFT JOIN City
ON City.Country=Country.Code AND City.Population > 5000000
WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range Name Name 52 NULL # Using index condition; Using where; Using MRR
1 SIMPLE City hash_range Population,Country #hash#Country:Population 3:4 world.Country.Code # Using where; Using MRR; Using join buffer (flat, BNLH join)
1 SIMPLE Country range Name Name 52 NULL # Using index condition; Using where; Rowid-ordered scan
1 SIMPLE City hash_range Population,Country #hash#Country:Population 3:4 world.Country.Code # Using where; Rowid-ordered scan; Using join buffer (flat, BNLH join)
SELECT Country.Name, Country.Population, City.Name, City.Population
FROM Country LEFT JOIN City
ON City.Country=Country.Code AND City.Population > 5000000
......@@ -1235,7 +1235,7 @@ ON City.Country=Country.Code AND
(City.Population > 5000000 OR City.Name LIKE 'Za%')
WHERE Country.Name LIKE 'C%' AND Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range Name Name 52 NULL 17 Using index condition; Using where; Using MRR
1 SIMPLE Country range Name Name 52 NULL 17 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE City hash_index_merge Population,Country,City_Name #hash#Country:Population,City_Name 3:4,35 world.Country.Code 96 Using sort_union(Population,City_Name); Using where; Using join buffer (flat, BNLH join)
SELECT Country.Name, Country.Population, City.Name, City.Population
FROM Country LEFT JOIN City
......@@ -1272,8 +1272,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -1303,8 +1303,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKA join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -1346,8 +1346,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -1375,7 +1375,7 @@ WHERE
Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
FROM Country LEFT JOIN CountryLanguage ON
(CountryLanguage.Country=Country.Code AND Language='English')
......@@ -1469,8 +1469,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -1500,8 +1500,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -1543,8 +1543,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -1572,7 +1572,7 @@ WHERE
Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
FROM Country LEFT JOIN CountryLanguage ON
(CountryLanguage.Country=Country.Code AND Language='English')
......@@ -1666,8 +1666,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -1697,8 +1697,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -1740,8 +1740,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -1769,7 +1769,7 @@ WHERE
Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
FROM Country LEFT JOIN CountryLanguage ON
(CountryLanguage.Country=Country.Code AND Language='English')
......@@ -1863,8 +1863,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -1894,8 +1894,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKAH join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -1937,8 +1937,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -1966,7 +1966,7 @@ WHERE
Country.Population > 10000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
FROM Country LEFT JOIN CountryLanguage ON
(CountryLanguage.Country=Country.Code AND Language='English')
......@@ -2064,7 +2064,7 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
......@@ -2138,7 +2138,7 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
......@@ -2168,7 +2168,7 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
......@@ -2242,7 +2242,7 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City hash_ALL Population,Country #hash#Country 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join)
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
......@@ -2272,8 +2272,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -2303,8 +2303,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKA join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -2346,8 +2346,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -2376,8 +2376,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -2407,8 +2407,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -2450,8 +2450,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -2480,8 +2480,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -2511,8 +2511,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -2554,8 +2554,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -2584,8 +2584,8 @@ SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND
Country.Name LIKE 'L%' AND City.Population > 100000;
......@@ -2615,8 +2615,8 @@ CountryLanguage.Percentage > 50 AND
LENGTH(Language) < LENGTH(City.Name) - 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKAH join)
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE City ref Country Country 3 world.CountryLanguage.Country 18 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name, CountryLanguage.Language
FROM City,Country,CountryLanguage
WHERE City.Country=Country.Code AND
......@@ -2658,8 +2658,8 @@ SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join)
1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Rowid-ordered scan
1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT Name FROM City
WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
City.Population > 100000;
......@@ -2743,8 +2743,8 @@ EXPLAIN
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND City.Population > 3000000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country Population 4 NULL # Using index condition; Using MRR
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.City.Country # Using join buffer (flat, BKAH join)
1 SIMPLE City range Population,Country Population 4 NULL # Using index condition; Rowid-ordered scan
1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.City.Country # Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT City.Name, Country.Name FROM City,Country
WHERE City.Country=Country.Code AND City.Population > 3000000;
Name Name
......@@ -3033,15 +3033,15 @@ t1.metaid = t2.metaid AND t1.affiliateid = '2';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t6 system PRIMARY NULL NULL NULL 1
1 SIMPLE t1 ref t1_affiliateid,t1_metaid t1_affiliateid 4 const 1
1 SIMPLE t4 ref PRIMARY,t4_formatclassid,t4_formats_idx t4_formats_idx 1 const 1 Using index condition; Using where; Using join buffer (flat, BKA join)
1 SIMPLE t5 eq_ref PRIMARY,t5_formattypeid PRIMARY 4 test.t4.formatclassid 1 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.metaid 1 Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref PRIMARY,t4_formatclassid,t4_formats_idx t4_formats_idx 1 const 1 Using index condition; Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 eq_ref PRIMARY,t5_formattypeid PRIMARY 4 test.t4.formatclassid 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.metaid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t7 ref PRIMARY PRIMARY 4 test.t1.metaid 1 Using index
1 SIMPLE t3 ref t3_metaid,t3_formatid,t3_metaidformatid t3_metaid 4 test.t1.metaid 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t8 eq_ref PRIMARY PRIMARY 4 test.t7.artistid 1 Using join buffer (incremental, BKA join)
1 SIMPLE t3 ref t3_metaid,t3_formatid,t3_metaidformatid t3_metaid 4 test.t1.metaid 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t8 eq_ref PRIMARY PRIMARY 4 test.t7.artistid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t9 index PRIMARY,t9_subgenreid,t9_metaid PRIMARY 8 NULL 2 Using where; Using index; Using join buffer (incremental, BNL join)
1 SIMPLE t10 eq_ref PRIMARY,t10_genreid PRIMARY 4 test.t9.subgenreid 1 Using join buffer (incremental, BKA join)
1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t10.genreid 1 Using join buffer (incremental, BKA join)
1 SIMPLE t10 eq_ref PRIMARY,t10_genreid PRIMARY 4 test.t9.subgenreid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t10.genreid 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT t1.uniquekey, t1.xml AS affiliateXml,
t8.name AS artistName, t8.artistid,
t11.name AS genreName, t11.genreid, t11.priority AS genrePriority,
......@@ -3122,7 +3122,7 @@ FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using where
1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index
1 SIMPLE t3 ref idx idx 5 test.t2.b2 5 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t3 ref idx idx 5 test.t2.b2 5 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT a1<>a2, a1, a2, b2, b3, c3,
SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2
FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7;
......@@ -3154,7 +3154,7 @@ set join_cache_level=8;
EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b >= 30;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx NULL NULL NULL 7 Using where
1 SIMPLE t2 ref idx idx 5 test.t1.a 2 Using join buffer (flat, BKAH join)
1 SIMPLE t2 ref idx idx 5 test.t1.a 2 Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b >= 30;
a b a b
7 40 7 10
......@@ -3187,7 +3187,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
......@@ -3214,7 +3214,7 @@ select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using temporary; Using filesort
1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
......@@ -3333,7 +3333,7 @@ set join_buffer_size=1024;
EXPLAIN SELECT AVG(c) FROM t1,t2 WHERE t1.a=t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2050 Using where
1 SIMPLE t2 ref idx idx 5 test.t1.a 640 Using join buffer (flat, BKA join)
1 SIMPLE t2 ref idx idx 5 test.t1.a 640 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT AVG(c) FROM t1,t2 WHERE t1.a=t2.b;
AVG(c)
5.0000
......@@ -3373,8 +3373,8 @@ WHERE t1.a=t2.a AND t2.a=t3.a AND
t1.b IS NULL AND t2.b IS NULL AND t3.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 16384 Using where
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT COUNT(*) FROM t1,t2,t3
WHERE t1.a=t2.a AND t2.a=t3.a AND
t1.b IS NULL AND t2.b IS NULL AND t3.b IS NULL;
......@@ -3439,7 +3439,7 @@ WHERE t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using index
1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a 1 Using index
1 SIMPLE t3 ref idx idx 16 test.t1.a,test.t2.b 2 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref idx idx 16 test.t1.a,test.t2.b 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val
FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b)
WHERE t1.a=t2.a;
......@@ -3510,7 +3510,7 @@ explain select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
set join_cache_level=6;
select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1;
......@@ -3523,7 +3523,7 @@ explain select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
set join_cache_level=7;
select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1;
......@@ -3536,7 +3536,7 @@ explain select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
set join_cache_level=8;
select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1;
......@@ -3549,7 +3549,7 @@ explain select t2.f1, t2.f2, t2.f3 from t1,t2
where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
drop table t1,t2;
set join_cache_level=default;
#
......@@ -3568,7 +3568,7 @@ select t1.id1, sum(t2.id2) from t1 join t2 on t1.id1=t2.id1
where t1.d=3 group by t1.id1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref idx1 idx1 5 const 4 Using where; Using index; Using temporary; Using filesort
1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using join buffer (flat, BKA join)
1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select t1.id1, sum(t2.id2) from t1 join t2 on t1.id1=t2.id1
where t1.d=3 group by t1.id1;
id1 sum(t2.id2)
......@@ -3580,7 +3580,7 @@ select t1.id1 from t1 join t2 on t1.id1=t2.id1
where t1.d=3 and t2.id2 > 200 order by t1.id1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref idx1 idx1 5 const 4 Using where; Using index; Using temporary; Using filesort
1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select t1.id1 from t1 join t2 on t1.id1=t2.id1
where t1.d=3 and t2.id2 > 200 order by t1.id1;
id1
......@@ -3637,9 +3637,9 @@ select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4
where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t2 ref idx idx 5 test.t1.b 1 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref idx idx 5 test.t1.d 1 Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref idx idx 5 test.t1.c 1 Using join buffer (incremental, BKA join)
1 SIMPLE t2 ref idx idx 5 test.t1.b 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref idx idx 5 test.t1.d 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref idx idx 5 test.t1.c 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4
where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c;
a b c d e f g
......@@ -3688,10 +3688,10 @@ WHERE t1.id1=t5.id1 AND t1.id2=t5.id2 and t4.id2=t1.id2 AND
t5.enum2='Active' AND t3.id4=t2.id4 AND t2.id3=t1.id3 AND t3.text1<'D';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 349 Using where
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.id3 1 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.id4 1 Using where; Using join buffer (incremental, BKAH join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 8 test.t1.id2 1 Using join buffer (incremental, BKAH join)
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 16 test.t1.id1,test.t1.id2 1 Using where; Using join buffer (incremental, BKAH join)
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.id3 1 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.id4 1 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 8 test.t1.id2 1 Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 16 test.t1.id1,test.t1.id2 1 Using where; Using join buffer (incremental, BKAH join); Key-ordered Rowid-ordered scan
SELECT STRAIGHT_JOIN t1.id1, t1.num3, t3.text1, t3.id4, t2.id3, t4.dummy
FROM t1 JOIN t2 JOIN t3 JOIN t4 JOIN t5
WHERE t1.id1=t5.id1 AND t1.id2=t5.id2 and t4.id2=t1.id2 AND
......@@ -3904,7 +3904,7 @@ SELECT t3.a FROM t1,t2,t3 WHERE t1.a = t3.a AND t1.b = t3.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using join buffer (flat, BNL join)
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT t3.a FROM t1,t2,t3 WHERE t1.a = t3.a AND t1.b = t3.b;
a
27
......@@ -3966,7 +3966,7 @@ set join_cache_level = 5;
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
......@@ -3975,7 +3975,7 @@ set join_cache_level = 8;
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
......@@ -3986,7 +3986,7 @@ set join_cache_level = 5;
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref b b 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
......@@ -4000,7 +4000,7 @@ set join_cache_level = 5;
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ref b b 103 test.t1.b 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref b b 103 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
......@@ -4009,7 +4009,7 @@ set join_cache_level = 8;
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ref b b 103 test.t1.b 2 Using where; Using join buffer (flat, BKAH join)
1 SIMPLE t2 ref b b 103 test.t1.b 2 Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
......@@ -4035,7 +4035,7 @@ SELECT t.a FROM t1 t, t1 s FORCE INDEX(idx)
WHERE s.pk AND s.a >= t.pk AND s.b = t.c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE s ref idx idx 19 test.t.c 1 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join)
1 SIMPLE s ref idx idx 19 test.t.c 1 Using index condition(BKA); Using where; Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
SELECT t.a FROM t1 t, t1 s FORCE INDEX(idx)
WHERE s.pk AND s.a >= t.pk AND s.b = t.c;
a
......@@ -4227,8 +4227,8 @@ SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v
GROUP BY t2.v ORDER BY t1.pk,t2.v;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL idx1 NULL NULL NULL 20 Using temporary; Using filesort
1 SIMPLE t3 eq_ref PRIMARY,idx2 PRIMARY 4 test.t2.i 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t1 ref idx2 idx2 3 test.t3.v 2 Using join buffer (incremental, BKA join)
1 SIMPLE t3 eq_ref PRIMARY,idx2 PRIMARY 4 test.t2.i 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t1 ref idx2 idx2 3 test.t3.v 2 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v
GROUP BY t2.v ORDER BY t1.pk,t2.v;
v
......@@ -4698,7 +4698,7 @@ SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON t3.a3 = t2.a2 ON t3.b3 <> 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON t3.a3 = t2.a2 ON t3.b3 <> 0;
a1 a2 b2 a3 b3
0 2 1 2 1
......@@ -4759,7 +4759,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using index
1 SIMPLE t4 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t2.a2 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT t4.a4, t5.b5
FROM ((t1 LEFT JOIN (t2 JOIN t3 ON t2.a2 = t3.a3) ON t2.b2 = t1.a1)
LEFT JOIN t4 ON t4.a4 <> 0) LEFT JOIN t5 ON t5.a5 = t2.a2;
......@@ -4817,8 +4817,8 @@ EXPLAIN
SELECT * FROM t1,t2
WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where; Using MRR
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where; Rowid-ordered scan
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
SELECT * FROM t1,t2
WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6);
f1 f3 f3 f2 f4
......@@ -4827,8 +4827,8 @@ EXPLAIN
SELECT * FROM t1,t2
WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using where; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
SELECT * FROM t1,t2
WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6);
f1 f3 f3 f2 f4
......@@ -4900,7 +4900,7 @@ EXPLAIN
SELECT * FROM t1,t2 WHERE t1.a < 3 and t2.a IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using index
1 SIMPLE t2 hash_range idx #hash#idx:idx 5:5 const 4 Using index condition; Using MRR; Using join buffer (flat, BNLH join)
1 SIMPLE t2 hash_range idx #hash#idx:idx 5:5 const 4 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNLH join)
SELECT * FROM t1,t2 WHERE t1.a < 3 and t2.a IS NULL;
a a b
1 NULL 10
......
mysql-test/r/join_nested_jcl6.result
View file @ 2a498b39
......@@ -858,7 +858,7 @@ ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join)
1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on((((`test`.`t3`.`a` = 1) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`b`))) and (`test`.`t3`.`b` is not null))) where 1
......@@ -966,7 +966,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
......@@ -1015,11 +1015,11 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
......@@ -1062,14 +1062,14 @@ t0.b=t1.b AND
(t9.a=1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ref idx_a idx_a 5 const 1 100.00 Using where
1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00 Using join buffer (flat, BKA join)
1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 100.00 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((((`test`.`t3`.`a` = 1) and (`test`.`t4`.`b` = `test`.`t2`.`b`)) and (`test`.`t2`.`b` is not null))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on((((`test`.`t6`.`b` < 10) and ((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t8`.`b` = `test`.`t5`.`b`))) and (`test`.`t7`.`b` is not null)))) on((((`test`.`t6`.`b` >= 2) and (`test`.`t7`.`b` = `test`.`t5`.`b`)) and (`test`.`t5`.`b` is not null)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and (((`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t5`.`b` = `test`.`t0`.`b`)) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
......@@ -1452,27 +1452,27 @@ explain select * from t4 join
t2 left join (t3 join t5 on t5.a=t3.b) on t3.a=t2.b where t4.a<=>t3.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL X
1 SIMPLE t3 ref a a 5 test.t2.b X Using where; Using join buffer (flat, BKA join)
1 SIMPLE t5 ref a a 5 test.t3.b X Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref a a 5 test.t3.b X Using index condition(BKA); Using join buffer (incremental, BKA join)
1 SIMPLE t3 ref a a 5 test.t2.b X Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ref a a 5 test.t3.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref a a 5 test.t3.b X Using index condition(BKA); Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
explain select * from (t4 join t6 on t6.a=t4.b) right join t3 on t4.a=t3.b
join t2 left join (t5 join t7 on t7.a=t5.b) on t5.a=t2.b where t3.a<=>t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL X
1 SIMPLE t3 ref a a 5 test.t2.b X Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t4 ref a a 5 test.t3.b X Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t6 ref a a 5 test.t4.b X Using join buffer (incremental, BKA join)
1 SIMPLE t5 ref a a 5 test.t2.b X Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t7 ref a a 5 test.t5.b X Using join buffer (incremental, BKA join)
1 SIMPLE t3 ref a a 5 test.t2.b X Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref a a 5 test.t3.b X Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t6 ref a a 5 test.t4.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ref a a 5 test.t2.b X Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t7 ref a a 5 test.t5.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
explain select * from t2 left join
(t3 left join (t4 join t6 on t6.a=t4.b) on t4.a=t3.b
join t5 on t5.a=t3.b) on t3.a=t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL X
1 SIMPLE t3 ref a a 5 test.t2.b X Using where; Using join buffer (flat, BKA join)
1 SIMPLE t5 ref a a 5 test.t3.b X Using join buffer (incremental, BKA join)
1 SIMPLE t4 ref a a 5 test.t5.a X Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t6 ref a a 5 test.t4.b X Using join buffer (incremental, BKA join)
1 SIMPLE t3 ref a a 5 test.t2.b X Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ref a a 5 test.t3.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref a a 5 test.t5.a X Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t6 ref a a 5 test.t4.b X Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
drop table t0, t1, t2, t3, t4, t5, t6, t7;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
......@@ -1485,8 +1485,8 @@ explain select * from t1 left join
on (t1.a = t2.a);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 10
1 SIMPLE t2 ref a a 5 test.t1.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t3 ref a a 5 test.t1.a 1 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t2 ref a a 5 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref a a 5 test.t1.a 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
drop table t1, t2, t3;
CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, type varchar(10));
CREATE TABLE t2 (pid int NOT NULL PRIMARY KEY, type varchar(10));
......@@ -1737,7 +1737,7 @@ LEFT JOIN
ON t4.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 Using where
1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index
1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index
......@@ -1831,9 +1831,9 @@ ON t6.b >= 2 AND t5.b=t7.b AND
(t8.a > 0 OR t8.c IS NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t5 ALL NULL NULL NULL NULL 3
1 SIMPLE t7 ref b_i b_i 5 test.t5.b 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t7 ref b_i b_i 5 test.t5.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t6 ALL b_i NULL NULL NULL 3 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t8 ref b_i b_i 5 test.t5.b 2 Using where; Using join buffer (incremental, BKA join)
1 SIMPLE t8 ref b_i b_i 5 test.t5.b 2 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t5
LEFT JOIN
......@@ -1867,7 +1867,7 @@ ON (t5.b=t8.b);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t5 ALL NULL NULL NULL NULL 2
1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join)
1 SIMPLE t7 const PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join)
1 SIMPLE t7 const PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t5 LEFT JOIN
......@@ -1884,7 +1884,7 @@ ON (t5.b=t8.b);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t5 ALL NULL NULL NULL NULL 2
1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join)
1 SIMPLE t7 ref b_i b_i 5 const 0 Using join buffer (incremental, BKA join)
1 SIMPLE t7 ref b_i b_i 5 const 0 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t5 LEFT JOIN
......@@ -1902,7 +1902,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t5 ALL NULL NULL NULL NULL 2
1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (incremental, BNL join)
1 SIMPLE t7 const PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join)
1 SIMPLE t7 const PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t5 LEFT JOIN
(t8, t6 LEFT JOIN t7 ON t7.a=1)
......
mysql-test/r/join_outer_jcl6.result
View file @ 2a498b39
......@@ -102,7 +102,7 @@ id select_type table type possible_keys key key_len ref rows Extra
explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 7
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
grp a c id a c d a
1 1 a 1 1 a 1 1
......@@ -745,13 +745,13 @@ explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from
order by m.match_id desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort
1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join)
1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select s.*, '*', m.*, (s.match_1_h - m.home) UUX from
(t2 s left join t1 m on m.match_id = 1)
order by UUX desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort
1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join)
1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select s.*, '*', m.*, (s.match_1_h - m.home) UUX from
(t2 s left join t1 m on m.match_id = 1)
order by UUX desc;
......@@ -771,7 +771,7 @@ t2 s straight_join t1 m where m.match_id = 1
order by UUX desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE s ALL NULL NULL NULL NULL 10 Using temporary; Using filesort
1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join)
1 SIMPLE m const match_id,match_id_2 match_id 1 const 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select s.*, '*', m.*, (s.match_1_h - m.home) UUX from
t2 s straight_join t1 m where m.match_id = 1
order by UUX desc;
......@@ -1134,15 +1134,15 @@ a b a b
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t1.a = t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a IN(t2.a, t2.b);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b-2, t2.b, t2.b-1);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 4 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
DROP TABLE t1,t2;
DROP VIEW IF EXISTS v1,v2;
DROP TABLE IF EXISTS t1,t2;
......@@ -1231,7 +1231,7 @@ EXPLAIN
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
1 SIMPLE t2 ref idx idx 4 test.t1.id 2 Using where; Not exists; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref idx idx 4 test.t1.id 2 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
flush status;
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id a
......
mysql-test/r/key_cache.result
View file @ 2a498b39
......@@ -628,7 +628,7 @@ select p from t1 where p between 1010 and 1020;
p
explain select i from t2 where p between 1010 and 1020;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 28 Using index condition; Using MRR
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 28 Using index condition; Rowid-ordered scan
select i from t2 where p between 1010 and 1020;
i
1
......
mysql-test/r/maria_mrr.result
View file @ 2a498b39
......@@ -185,7 +185,7 @@ explain
select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
or c='no-such-row2');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Using MRR
1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Rowid-ordered scan
select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
or c='no-such-row2');
a b c filler
......@@ -207,7 +207,7 @@ NULL NULL NULL NULL-1
explain
select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Using MRR
1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Rowid-ordered scan
select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
a b c filler
b-1 NULL c-1 NULL-15
......@@ -395,7 +395,7 @@ WHERE
table1.col_varchar_1024_latin1_key = table2.col_varchar_10_latin1 AND table1.pk<>0 ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE table2 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE table1 ref PRIMARY,col_varchar_1024_latin1_key col_varchar_1024_latin1_key 1027 test.table2.col_varchar_10_latin1 2 Using index condition(BKA); Using where; Using join buffer (flat, BKA join)
1 SIMPLE table1 ref PRIMARY,col_varchar_1024_latin1_key col_varchar_1024_latin1_key 1027 test.table2.col_varchar_10_latin1 2 Using index condition(BKA); Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT count(*)
FROM t1 AS table1, t2 AS table2
WHERE
......
mysql-test/r/merge.result
View file @ 2a498b39
......@@ -673,7 +673,7 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT * FROM t1 WHERE fileset_id = 2
AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,files PRIMARY 35 NULL 5 Using index condition; Using MRR
1 SIMPLE t1 range PRIMARY,files PRIMARY 35 NULL 5 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
AND file_code = '0000000115' LIMIT 1;
id select_type table type possible_keys key key_len ref rows Extra
......
mysql-test/r/mix2_myisam.result
View file @ 2a498b39
......@@ -1114,11 +1114,11 @@ count(*)
29267
explain select * from t1 where c between 1 and 2500;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL # Using index condition; Using MRR
1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan
update t1 set c=a;
explain select * from t1 where c between 1 and 2500;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL # Using index condition; Using MRR
1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan
drop table t1,t2;
create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) engine=MyISAM;
insert into t1 (id) values (null),(null),(null),(null),(null);
......
mysql-test/r/myisam.result
View file @ 2a498b39
......@@ -368,7 +368,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL a NULL NULL NULL 5 Using where
explain select * from t1 force index (a) where a=0 or a=2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Using MRR
1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Rowid-ordered scan
explain select * from t1 where c=1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref c,c_2 c 5 const 1
......
mysql-test/r/myisam_mrr.result
View file @ 2a498b39
......@@ -186,7 +186,7 @@ explain
select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
or c='no-such-row2');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 range idx1 idx1 29 NULL 10 Using index condition; Using MRR
1 SIMPLE t4 range idx1 idx1 29 NULL 10 Using index condition; Rowid-ordered scan
select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
or c='no-such-row2');
a b c filler
......@@ -208,7 +208,7 @@ NULL NULL NULL NULL-1
explain
select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 range idx1 idx1 29 NULL 21 Using index condition; Using MRR
1 SIMPLE t4 range idx1 idx1 29 NULL 21 Using index condition; Rowid-ordered scan
select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
a b c filler
b-1 NULL c-1 NULL-15
......@@ -403,16 +403,16 @@ insert into t1 select A.a + 10 *(B.a + 10*C.a), A.a + 10 *(B.a + 10*C.a) from t0
A query that will use ICP:
explain select * from t1 where a < 20;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 20 Using index condition; Using MRR
1 SIMPLE t1 range a a 5 NULL 20 Using index condition; Rowid-ordered scan
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off';
explain select * from t1 where a < 20;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 20 Using where; Using MRR
1 SIMPLE t1 range a a 5 NULL 20 Using where; Rowid-ordered scan
set optimizer_switch='index_condition_pushdown=on';
explain select * from t1 where a < 20;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 20 Using index condition; Using MRR
1 SIMPLE t1 range a a 5 NULL 20 Using index condition; Rowid-ordered scan
set optimizer_switch=@save_optimizer_switch;
#
# BUG#629684: Unreachable code in multi_range_read.cc in maria-5.3-dsmrr-cpk
......@@ -426,7 +426,7 @@ explain
select * from t0, t1 where t0.a<=>t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 5
1 SIMPLE t1 ref a a 5 test.t0.a 1 Using index condition(BKA); Using join buffer (flat, BKA join)
1 SIMPLE t1 ref a a 5 test.t0.a 1 Using index condition(BKA); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select * from t0, t1 where t0.a<=>t1.a;
a a b
0 0 0
......@@ -504,7 +504,7 @@ table3.col_varchar_key = table2.col_varchar_nokey AND
table3.pk<>0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE table2 ALL col_varchar_key NULL NULL NULL 20 Using where
1 SIMPLE table3 ref PRIMARY,col_varchar_key col_varchar_key 3 test.table2.col_varchar_key 3 Using where; Using join buffer (flat, BKA join)
1 SIMPLE table3 ref PRIMARY,col_varchar_key col_varchar_key 3 test.table2.col_varchar_key 3 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
set join_cache_level= @save_join_cache_level;
set join_buffer_size= @save_join_buffer_size;
drop table t1;
mysql-test/r/null.result
View file @ 2a498b39
......@@ -148,10 +148,10 @@ insert into t1 values
(7,7), (8,8), (9,9), (10,10), (11,11), (12,12);
explain select * from t1 where a between 2 and 3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx idx 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range idx idx 4 NULL 2 Using index condition; Rowid-ordered scan
explain select * from t1 where a between 2 and 3 or b is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx idx 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range idx idx 4 NULL 2 Using index condition; Rowid-ordered scan
drop table t1;
select cast(NULL as signed);
cast(NULL as signed)
......
mysql-test/r/order_by.result
View file @ 2a498b39
......@@ -611,7 +611,7 @@ DS-MRR: use two IGNORE INDEX queries, otherwise we get cost races, because
DS-MRR: records_in_range/read_time return the same numbers for all three indexes
EXPLAIN SELECT * FROM t1 IGNORE INDEX (LongField, StringField) WHERE FieldKey > '2' ORDER BY LongVal;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range FieldKey FieldKey 38 NULL 4 Using index condition; Using MRR; Using filesort
1 SIMPLE t1 range FieldKey FieldKey 38 NULL 4 Using index condition; Rowid-ordered scan; Using filesort
EXPLAIN SELECT * FROM t1 IGNORE INDEX (FieldKey, LongField) WHERE FieldKey > '2' ORDER BY LongVal;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range StringField StringField 38 NULL 4 Using where; Using filesort
......@@ -1112,7 +1112,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index k2 k3 5 NULL 73 Using where
EXPLAIN SELECT id,c3 FROM t2 WHERE c2 BETWEEN 20 AND 30 ORDER BY c3 LIMIT 4000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range k2 k2 5 NULL 386 Using index condition; Using where; Using MRR; Using filesort
1 SIMPLE t2 range k2 k2 5 NULL 386 Using index condition; Using where; Rowid-ordered scan; Using filesort
SELECT id,c3 FROM t2 WHERE c2=11 ORDER BY c3 LIMIT 20;
id c3
6 14
......@@ -1607,19 +1607,19 @@ INSERT INTO t2 SELECT a+4, b FROM t2;
EXPLAIN
SELECT * FROM t1 FORCE INDEX FOR ORDER BY (a), t2 WHERE t1.a < 2 ORDER BY t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Using MRR; Using temporary; Using filesort
1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Rowid-ordered scan; Using temporary; Using filesort
1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
# should have "using filesort"
EXPLAIN
SELECT * FROM t1 USE INDEX FOR ORDER BY (a), t2 WHERE t1.a < 2 ORDER BY t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Using MRR; Using temporary; Using filesort
1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Rowid-ordered scan; Using temporary; Using filesort
1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
# should have "using filesort"
EXPLAIN
SELECT * FROM t1 FORCE INDEX FOR JOIN (a), t2 WHERE t1.a < 2 ORDER BY t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Using MRR; Using temporary; Using filesort
1 SIMPLE t1 range a a 5 NULL 2 Using index condition; Rowid-ordered scan; Using temporary; Using filesort
1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)
DROP TABLE t1, t2;
#
......
mysql-test/r/ps_1general.result
View file @ 2a498b39
......@@ -465,9 +465,9 @@ def key 253 64 7 Y 0 31 8
def key_len 253 4096 1 Y 0 31 8
def ref 253 2048 0 Y 0 31 8
def rows 8 10 1 Y 32928 0 63
def Extra 253 255 48 N 1 31 8
def Extra 253 255 57 N 1 31 8
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using index condition; Using MRR; Using filesort
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 Using index condition; Rowid-ordered scan; Using filesort
drop table if exists t2;
create table t2 (id smallint, name varchar(20)) ;
prepare stmt1 from ' insert into t2 values(?, ?) ' ;
......
mysql-test/r/range.result
View file @ 2a498b39
......@@ -221,27 +221,27 @@ update t1 set y=x;
explain select * from t1, t1 t2 where t1.y = 8 and t2.x between 7 and t1.y+0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref y y 5 const 1
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join)
explain select * from t1, t1 t2 where t1.y = 8 and t2.x >= 7 and t2.x <= t1.y+0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref y y 5 const 1
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join)
explain select * from t1, t1 t2 where t1.y = 2 and t2.x between t1.y-1 and t1.y+1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref y y 5 const 1
1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join)
explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= t1.y-1 and t2.x <= t1.y+1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref y y 5 const 1
1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join)
explain select * from t1, t1 t2 where t1.y = 2 and t2.x between 0 and t1.y;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref y y 5 const 1
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join)
explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= 0 and t2.x <= t1.y;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref y y 5 const 1
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer (flat, BNL join)
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Rowid-ordered scan; Using join buffer (flat, BNL join)
explain select count(*) from t1 where x in (1);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref x x 5 const 1 Using index
......@@ -276,7 +276,7 @@ INSERT INTO t1 VALUES
(33,5),(33,5),(33,5),(33,5),(34,5),(35,5);
EXPLAIN SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a,b a 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t1 range a,b a 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
a b
DROP TABLE t1;
......@@ -421,19 +421,19 @@ test.t1 analyze status OK
test.t2 analyze status Table is already up to date
explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Using MRR
1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Using MRR
1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid != 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Using MRR
1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid != 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Using MRR
1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0;
id name uid id name uid
......@@ -618,10 +618,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref a a 11 const 2 Using index condition
explain select * from t1 where a=binary 'aaa';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Rowid-ordered scan
explain select * from t1 where a='aaa' collate latin1_bin;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Rowid-ordered scan
explain select * from t1 where a='aaa' collate latin1_german1_ci;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL a NULL NULL NULL 9 Using where
......@@ -878,10 +878,10 @@ INSERT INTO t1 VALUES
(55,'C'), (56,'C'), (57,'C'), (58,'C'), (59,'C'), (60,'C');
EXPLAIN SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Using MRR
1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE status NOT IN ('A','B');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Using MRR
1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B';
id status
53 C
......@@ -910,10 +910,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range status status 23 NULL 11 Using where; Using index
EXPLAIN SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Using MRR
1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Using MRR
1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
id status
53 C
......@@ -1014,10 +1014,10 @@ create table t2 (a varchar(10), filler char(200), key(a));
insert into t2 select * from t1;
explain select * from t1 where a between 'a' and 'a ';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 13 NULL # Using index condition; Using MRR
1 SIMPLE t1 range a a 13 NULL # Using index condition; Rowid-ordered scan
explain select * from t1 where a = 'a' or a='a ';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 13 NULL # Using index condition; Using MRR
1 SIMPLE t1 range a a 13 NULL # Using index condition; Rowid-ordered scan
explain select * from t2 where a between 'a' and 'a ';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref a a 13 const # Using index condition
......@@ -1027,7 +1027,7 @@ id select_type table type possible_keys key key_len ref rows Extra
update t1 set a='b' where a<>'a';
explain select * from t1 where a not between 'b' and 'b';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 13 NULL # Using index condition; Using MRR
1 SIMPLE t1 range a a 13 NULL # Using index condition; Rowid-ordered scan
select a, hex(filler) from t1 where a not between 'b' and 'b';
a hex(filler)
a 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
......@@ -1071,10 +1071,10 @@ id b c
0 3 4
EXPLAIN SELECT * FROM t1 WHERE b<=3 AND 3<=c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using index condition; Using where; Rowid-ordered scan
EXPLAIN SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where; Using MRR
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where; Rowid-ordered scan
SELECT * FROM t1 WHERE 0 < b OR 0 > c;
id b c
0 3 4
......@@ -1151,7 +1151,7 @@ INSERT INTO t1 VALUES
This must use range access:
explain select * from t1 where dateval >= '2007-01-01 00:00:00' and dateval <= '2007-01-02 23:59:59';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range dateval dateval 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range dateval dateval 4 NULL 2 Using index condition; Rowid-ordered scan
drop table t1;
CREATE TABLE t1 (
a varchar(32), index (a)
......
mysql-test/r/range_vs_index_merge.result
View file @ 2a498b39
......@@ -49,14 +49,14 @@ SELECT * FROM City
WHERE (Population >= 100000 OR Name LIKE 'P%') AND Country='CAN' OR
(Population < 100000 OR Name Like 'T%') AND Country='ARG';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Country 3 NULL 104 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Country 3 NULL 104 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE Population < 200000 AND Name LIKE 'P%' AND
(Population > 300000 OR Name LIKE 'T%') AND
(Population < 100000 OR Name LIKE 'Pa%');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Name Name 35 NULL 135 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Name Name 35 NULL 135 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE Population > 100000 AND Name LIKE 'Aba%' OR
......@@ -69,12 +69,12 @@ EXPLAIN
SELECT * FROM City
WHERE (Population > 101000 AND Population < 115000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 459 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 459 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'));
......@@ -91,7 +91,7 @@ SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Population 4 NULL 39 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Population 4 NULL 39 Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 115000);
......@@ -171,37 +171,37 @@ ID Name Country Population
EXPLAIN
SELECT * FROM City WHERE (Name < 'Ac');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 13 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 13 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Name < 'Bb');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 208 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 208 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Country > 'A' AND Country < 'B');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 104 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 104 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'Pb');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 39 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 39 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'S');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 221 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 221 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 110000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 328 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 328 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 103000 AND Population < 104000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 37 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 37 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR
(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000));
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Name 35 NULL 52 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Name 35 NULL 52 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR
......@@ -327,11 +327,11 @@ ID Name Country Population
EXPLAIN
SELECT * FROM City WHERE (ID < 10) OR (ID BETWEEN 100 AND 110);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 21 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 21 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 100 AND 200);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 201 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 201 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1500);
id select_type table type possible_keys key key_len ref rows Extra
......@@ -339,22 +339,22 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN
SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 19 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 19 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'H%' OR Name LIKE 'P%' ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 222 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 222 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'Ha%' OR Name LIKE 'Pa%' ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 72 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 72 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 21 Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 21 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
......@@ -576,39 +576,39 @@ ID Name Country Population
EXPLAIN
SELECT * FROM City WHERE Population > 101000 AND Population < 102000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Population > 101000 AND Population < 110000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 328 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 328 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Country < 'C';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 436 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 436 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Country < 'AGO';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 6 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 6 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name BETWEEN 'P' AND 'S';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 221 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 221 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name BETWEEN 'P' AND 'Pb';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 39 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 39 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 3400 AND 3800;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 401 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 401 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'P%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 135 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 135 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) AND
......@@ -679,15 +679,15 @@ CREATE INDEX CountryPopulation ON City(Country,Population);
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'Pas%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 5 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 5 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'P%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 135 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 135 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 103000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 81 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 81 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Country='USA';
id select_type table type possible_keys key key_len ref rows Extra
......@@ -764,39 +764,39 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 4025 AND 4035;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 4028 AND 4032;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 5 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 5 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 3500 AND 3800;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 301 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 301 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 4000 AND 4300;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 80 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 80 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 250 and 260 ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Using MRR
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 11 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 39 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 103000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 81 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 81 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'Pa%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 41 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 41 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) OR
......@@ -949,14 +949,14 @@ WHERE ((Population > 101000 AND Population < 11000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA'
AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 38 NULL 23 Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 38 NULL 23 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Population > 101000 AND Population < 11000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA'
AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName Name 35 NULL 1 Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName Name 35 NULL 1 Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 11000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA'
......
mysql-test/r/range_vs_index_merge_innodb.result
View file @ 2a498b39
......@@ -50,14 +50,14 @@ SELECT * FROM City
WHERE (Population >= 100000 OR Name LIKE 'P%') AND Country='CAN' OR
(Population < 100000 OR Name Like 'T%') AND Country='ARG';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Country 3 NULL 106 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Country 3 NULL 106 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE Population < 200000 AND Name LIKE 'P%' AND
(Population > 300000 OR Name LIKE 'T%') AND
(Population < 100000 OR Name LIKE 'Pa%');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Name Name 35 NULL 235 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Name Name 35 NULL 235 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE Population > 100000 AND Name LIKE 'Aba%' OR
......@@ -70,12 +70,12 @@ EXPLAIN
SELECT * FROM City
WHERE (Population > 101000 AND Population < 115000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 458 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 458 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'));
......@@ -92,7 +92,7 @@ SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Population 4 NULL 38 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Population 4 NULL 38 Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 115000);
......@@ -172,37 +172,37 @@ ID Name Country Population
EXPLAIN
SELECT * FROM City WHERE (Name < 'Ac');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 23 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 23 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Name < 'Bb');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 373 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 373 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Country > 'A' AND Country < 'B');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 106 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 106 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'Pb');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Name BETWEEN 'P' AND 'S');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 384 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 384 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 110000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 327 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 327 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 103000 AND Population < 104000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 36 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 36 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR
(Name BETWEEN 'P' AND 'Pb' AND (Population > 101000 AND Population < 110000));
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Name 35 NULL 94 Using index condition; Using where; Using MRR
1 SIMPLE City range Population,Country,Name Name 35 NULL 94 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE (Name < 'Ac' AND (Country > 'A' AND Country < 'B')) OR
......@@ -340,15 +340,15 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN
SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 19 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 19 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'H%' OR Name LIKE 'P%' ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 394 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 394 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'Ha%' OR Name LIKE 'Pa%' ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 133 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 133 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
......@@ -577,27 +577,27 @@ ID Name Country Population
EXPLAIN
SELECT * FROM City WHERE Population > 101000 AND Population < 102000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Population > 101000 AND Population < 110000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 327 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 327 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Country < 'C';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 446 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 446 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Country < 'AGO';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Country Country 3 NULL 5 Using index condition; Using MRR
1 SIMPLE City range Country Country 3 NULL 5 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name BETWEEN 'P' AND 'S';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 384 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 384 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name BETWEEN 'P' AND 'Pb';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 3400 AND 3800;
id select_type table type possible_keys key key_len ref rows Extra
......@@ -609,7 +609,7 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'P%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 235 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 235 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) AND
......@@ -680,15 +680,15 @@ CREATE INDEX CountryPopulation ON City(Country,Population);
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'Pas%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 8 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 8 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'P%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 235 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 235 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 103000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 80 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 80 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Country='USA';
id select_type table type possible_keys key key_len ref rows Extra
......@@ -789,15 +789,15 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 38 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 103000);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 80 Using index condition; Using MRR
1 SIMPLE City range Population Population 4 NULL 80 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City WHERE Name LIKE 'Pa%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Using MRR
1 SIMPLE City range Name Name 35 NULL 71 Using index condition; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) OR
......@@ -950,14 +950,14 @@ WHERE ((Population > 101000 AND Population < 11000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA'
AND (Name LIKE 'P%' OR ID BETWEEN 4000 AND 4300);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 38 NULL 18 Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 38 NULL 18 Using index condition; Using where; Rowid-ordered scan
EXPLAIN
SELECT * FROM City
WHERE ((Population > 101000 AND Population < 11000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA'
AND (Name LIKE 'Pho%' OR ID BETWEEN 4000 AND 4300);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName Name 35 NULL 1 Using index condition; Using where; Using MRR
1 SIMPLE City range PRIMARY,Population,Country,Name,CountryPopulation,CountryName Name 35 NULL 1 Using index condition; Using where; Rowid-ordered scan
SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 11000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA'
......
mysql-test/r/select.result
View file @ 2a498b39
......@@ -3417,7 +3417,7 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr
FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
DROP TABLE t1,t2;
CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL);
INSERT t1 SET i = 0;
......@@ -3453,7 +3453,7 @@ In next EXPLAIN, B.rows must be exactly 10:
explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5
and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10
drop table t1, t2;
CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b));
......@@ -3467,12 +3467,12 @@ INSERT INTO t2 VALUES
EXPLAIN
SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref c c 5 test.t1.a 2
EXPLAIN
SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 ref c c 5 test.t1.a 2
DROP TABLE t1, t2;
create table t1 (
......@@ -3562,19 +3562,19 @@ EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk < 'c' AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where
EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where
EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where
DROP TABLE t1,t2;
CREATE TABLE t1 (a int, b varchar(20) NOT NULL, PRIMARY KEY(a));
......@@ -3608,7 +3608,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND
t3.a=t2.a AND t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
EXPLAIN
SELECT t3.a FROM t1,t2,t3
......@@ -3616,7 +3616,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND
t3.a=t2.a AND t3.c IN ('bb','ee') ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
EXPLAIN
SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3
......@@ -3624,7 +3624,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND
t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
EXPLAIN
SELECT t3.a FROM t1,t2,t3
......@@ -3632,7 +3632,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND
t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
DROP TABLE t1,t2,t3;
CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int);
......@@ -3752,7 +3752,7 @@ AND t1.ts BETWEEN t2.dt1 AND t2.dt2
AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31";
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Using MRR
1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Rowid-ordered scan
Warnings:
Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1
SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30
......@@ -4376,12 +4376,12 @@ CREATE TABLE t1 (a INT KEY, b INT);
INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4);
EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND a = b LIMIT 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2
EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND b = a LIMIT 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2
DROP TABLE t1;
......
mysql-test/r/select_jcl6.result
View file @ 2a498b39
......@@ -611,15 +611,15 @@ id select_type table type possible_keys key key_len ref rows Extra
explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort
1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period limit 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 ALL period NULL NULL NULL 41810 Using temporary; Using filesort
1 SIMPLE t1 ref period period 4 test.t3.period 4181 Using join buffer (flat, BKA join)
1 SIMPLE t1 ref period period 4 test.t3.period 4181 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select * from t3 as t1,t3 where t1.period=t3.period order by t1.period limit 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort
1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select period from t1;
period
9410
......@@ -1366,7 +1366,7 @@ count(*)
explain select t2.companynr,companyname from t2 left join t4 using (companynr) where t4.companynr is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 1200
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using where; Not exists; Using join buffer (flat, BKA join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using where; Not exists; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 ALL NULL NULL NULL NULL 12
......@@ -1386,15 +1386,15 @@ delete from t2 where fld1=999999;
explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr < 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 and t4.companynr > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where
......@@ -3424,7 +3424,7 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr
FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
DROP TABLE t1,t2;
CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL);
INSERT t1 SET i = 0;
......@@ -3460,8 +3460,8 @@ In next EXPLAIN, B.rows must be exactly 10:
explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5
and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10 Using join buffer (flat, BKA join)
1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
drop table t1, t2;
CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b));
INSERT INTO t1 VALUES (1, 3), (9,4), (7,5), (4,5), (6,2),
......@@ -3474,13 +3474,13 @@ INSERT INTO t2 VALUES
EXPLAIN
SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using MRR
1 SIMPLE t2 ref c c 5 test.t1.a 2 Using join buffer (flat, BKA join)
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref c c 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN
SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t2 ref c c 5 test.t1.a 2 Using join buffer (flat, BKA join)
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 ref c c 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
DROP TABLE t1, t2;
create table t1 (
a int unsigned not null auto_increment primary key,
......@@ -3569,20 +3569,20 @@ EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk < 'c' AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
DROP TABLE t1,t2;
CREATE TABLE t1 (a int, b varchar(20) NOT NULL, PRIMARY KEY(a));
CREATE TABLE t2 (a int, b varchar(20) NOT NULL,
......@@ -3615,32 +3615,32 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND
t3.a=t2.a AND t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN
SELECT t3.a FROM t1,t2,t3
WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND
t3.a=t2.a AND t3.c IN ('bb','ee') ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN
SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3
WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND
t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN
SELECT t3.a FROM t1,t2,t3
WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND
t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
DROP TABLE t1,t2,t3;
CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int);
CREATE TABLE t2 ( f11 int PRIMARY KEY );
......@@ -3759,7 +3759,7 @@ AND t1.ts BETWEEN t2.dt1 AND t2.dt2
AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31";
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Using MRR
1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Rowid-ordered scan
Warnings:
Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1
SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30
......@@ -4383,12 +4383,12 @@ CREATE TABLE t1 (a INT KEY, b INT);
INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4);
EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND a = b LIMIT 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2
EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND b = a LIMIT 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2
DROP TABLE t1;
......@@ -4827,7 +4827,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
1 SIMPLE t2 ALL NULL NULL NULL NULL 12
1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join)
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
......@@ -4907,18 +4907,18 @@ SET SESSION optimizer_switch='index_condition_pushdown=off';
EXPLAIN SELECT * from t1,t2,t3 WHERE t3.a3=t1.a1 AND t2.a2=t1.a1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx NULL NULL NULL 3
1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join)
1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t1.a1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx NULL NULL NULL 3
1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join)
1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
EXPLAIN SELECT * FROM t1,t2,t3 WHERE t2.a2=t1.a1 AND t3.a3=t2.a2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx NULL NULL NULL 3
1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join)
1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join)
1 SIMPLE t2 ref idx idx 4 test.t1.a1 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref idx idx 4 test.t1.a1 5 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT * from t1,t2,t3
WHERE t3.a3=t1.a1 AND t2.a2=t1.a1 AND
LENGTH(CONCAT(CONCAT(t1.b1,t2.b2),t3.b3)) <= 7;
......@@ -5013,7 +5013,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t5 system PRIMARY NULL NULL NULL 1
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index
1 SIMPLE t2 ref f22 f22 5 const 1
1 SIMPLE t6 ref f61 f61 5 const 1 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t6 ref f61 f61 5 const 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref f42 f42 5 const 1 Using index
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
SELECT t2.f23 FROM
......
mysql-test/r/select_pkeycache.result
View file @ 2a498b39
......@@ -3417,7 +3417,7 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr
FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
DROP TABLE t1,t2;
CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL);
INSERT t1 SET i = 0;
......@@ -3453,7 +3453,7 @@ In next EXPLAIN, B.rows must be exactly 10:
explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5
and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE A range PRIMARY PRIMARY 12 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE B ref PRIMARY PRIMARY 8 const,test.A.e 10
drop table t1, t2;
CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b));
......@@ -3467,12 +3467,12 @@ INSERT INTO t2 VALUES
EXPLAIN
SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using MRR
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Rowid-ordered scan
1 SIMPLE t2 ref c c 5 test.t1.a 2
EXPLAIN
SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 ref c c 5 test.t1.a 2
DROP TABLE t1, t2;
create table t1 (
......@@ -3562,19 +3562,19 @@ EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk < 'c' AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 3 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where
EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where
EXPLAIN SELECT t2.*
FROM t1 JOIN t2 ON t2.fk=t1.pk
WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 12 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 18 test.t1.fk 1 Using where
DROP TABLE t1,t2;
CREATE TABLE t1 (a int, b varchar(20) NOT NULL, PRIMARY KEY(a));
......@@ -3608,7 +3608,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND
t3.a=t2.a AND t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
EXPLAIN
SELECT t3.a FROM t1,t2,t3
......@@ -3616,7 +3616,7 @@ WHERE t1.id = 8 AND t2.i BETWEEN t1.b AND t1.e AND
t3.a=t2.a AND t3.c IN ('bb','ee') ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si,ai si 5 NULL 4 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
EXPLAIN
SELECT t3.a FROM t1,t2 FORCE INDEX (si),t3
......@@ -3624,7 +3624,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND
t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
EXPLAIN
SELECT t3.a FROM t1,t2,t3
......@@ -3632,7 +3632,7 @@ WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND
t3.c IN ('bb','ee');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Using MRR
1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where; Rowid-ordered scan
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
DROP TABLE t1,t2,t3;
CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int);
......@@ -3752,7 +3752,7 @@ AND t1.ts BETWEEN t2.dt1 AND t2.dt2
AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31";
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Using MRR
1 SIMPLE t1 range ts ts 4 NULL 1 Using index condition; Using where; Rowid-ordered scan
Warnings:
Warning 1292 Incorrect datetime value: '2999-12-31 00:00:00' for column 'ts' at row 1
SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30
......@@ -4376,12 +4376,12 @@ CREATE TABLE t1 (a INT KEY, b INT);
INSERT INTO t1 VALUES (1,1), (2,2), (3,3), (4,4);
EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND a = b LIMIT 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2
EXPLAIN EXTENDED SELECT a, b FROM t1 WHERE a > 1 AND b = a LIMIT 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Using MRR
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using index condition; Using where; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 1)) limit 2
DROP TABLE t1;
......
mysql-test/r/subselect3.result
View file @ 2a498b39
......@@ -1135,7 +1135,7 @@ and t4.pk=t1.c);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 100
1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1
2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Using MRR
2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Rowid-ordered scan
2 SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 Using index
drop table t1, t3, t4;
create table t1 (a int) as select * from t0 where a < 5;
......
mysql-test/r/subselect3_jcl6.result
View file @ 2a498b39
......@@ -167,7 +167,7 @@ from t3;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 4 100.00 Using where; Full scan on NULL key
2 DEPENDENT SUBQUERY t2 ref a a 5 test.t1.b 1 100.00 Using where; Using join buffer (flat, BKA join)
2 DEPENDENT SUBQUERY t2 ref a a 5 test.t1.b 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
Warnings:
Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<expr_cache><`test`.`t3`.`a`,`test`.`t3`.`oref`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond(((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t1`.`a`))))) AS `Z` from `test`.`t3`
......@@ -195,7 +195,7 @@ from t3;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
2 DEPENDENT SUBQUERY t1 ref a a 4 func 2 100.00 Using where; Full scan on NULL key
2 DEPENDENT SUBQUERY t2 ref a a 4 test.t1.b 1 100.00 Using where; Using join buffer (flat, BKA join)
2 DEPENDENT SUBQUERY t2 ref a a 4 test.t1.b 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
Warnings:
Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<expr_cache><`test`.`t3`.`a`,`test`.`t3`.`oref`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`)))))) AS `Z` from `test`.`t3`
......@@ -739,7 +739,7 @@ WHERE t3.name='xxx' AND t2.id=t3.id);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
2 DEPENDENT SUBQUERY t2 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index; Full scan on NULL key
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 Using index condition(BKA); Using where; Full scan on NULL key; Using join buffer (flat, BKA join)
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 Using index condition(BKA); Using where; Full scan on NULL key; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
SELECT * FROM t1
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3
WHERE t3.name='xxx' AND t2.id=t3.id);
......@@ -1142,7 +1142,7 @@ and t4.pk=t1.c);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 100
1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1
2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Using MRR
2 SUBQUERY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Rowid-ordered scan
2 SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 Using index
drop table t1, t3, t4;
create table t1 (a int) as select * from t0 where a < 5;
......@@ -1175,7 +1175,7 @@ insert into t3 select A.a + 10*B.a, 'filler' from t0 A, t0 B;
explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2
1 PRIMARY t3 ref a a 5 test.t2.a 1 Using join buffer (flat, BKA join)
1 PRIMARY t3 ref a a 5 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
select * from t3 where a in (select a from t2);
a filler
......@@ -1224,7 +1224,7 @@ explain select * from t1, t3 where t3.a in (select a from t2) and (t3.a < 10 or
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 10 Using where
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10
1 PRIMARY t3 ref a a 5 test.t2.a 10 Using join buffer (flat, BKA join)
1 PRIMARY t3 ref a a 5 test.t2.a 10 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where
explain select straight_join * from t1 A, t1 B where A.a in (select a from t2);
id select_type table type possible_keys key key_len ref rows Extra
......@@ -1254,14 +1254,14 @@ explain select * from t0, t3 where t3.a in (select a from t2) and (t3.a < 10 or
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 system NULL NULL NULL NULL 1
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10
1 PRIMARY t3 ref a a 5 test.t2.a 10 Using join buffer (flat, BKA join)
1 PRIMARY t3 ref a a 5 test.t2.a 10 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t2 ALL NULL NULL NULL NULL 10 Using where
create table t4 as select a as x, a as y from t1;
explain select * from t0, t3 where (t3.a, t3.b) in (select x,y from t4) and (t3.a < 10 or t3.a >30);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 system NULL NULL NULL NULL 1
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10
1 PRIMARY t3 ref a a 5 test.t4.x 10 Using where; Using join buffer (flat, BKA join)
1 PRIMARY t3 ref a a 5 test.t4.x 10 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t4 ALL NULL NULL NULL NULL 10 Using where
drop table t0,t1,t2,t3,t4;
create table t0 (a int);
......@@ -1412,7 +1412,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 2 1.00
1 PRIMARY a index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join)
2 SUBQUERY cona ALL NULL NULL NULL NULL 2 100.00 Using where
2 SUBQUERY c eq_ref PRIMARY PRIMARY 4 test.cona.idContact 1 100.00 Using join buffer (flat, BKA join)
2 SUBQUERY c eq_ref PRIMARY PRIMARY 4 test.cona.idContact 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
Warnings:
Note 1003 select `test`.`a`.`idIndividual` AS `idIndividual` from `test`.`t1` `a` semi join (`test`.`t3` `cona` join `test`.`t2` `c`) where ((`test`.`c`.`idContact` = `test`.`cona`.`idContact`) and (`test`.`a`.`idIndividual` = `test`.`c`.`idObj`) and (`test`.`cona`.`postalStripped` = 'T2H3B2'))
drop table t1,t2,t3;
......
mysql-test/r/subselect4.result
View file @ 2a498b39
......@@ -954,28 +954,28 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -983,21 +983,21 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -1005,7 +1005,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
not_in
1
......@@ -1013,7 +1013,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
not_in
NULL
......@@ -1021,7 +1021,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -1029,7 +1029,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -1045,28 +1045,28 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -1074,21 +1074,21 @@ EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
f1 f2
EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -1096,7 +1096,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
not_in
1
......@@ -1104,7 +1104,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
not_in
NULL
......@@ -1112,7 +1112,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......@@ -1120,7 +1120,7 @@ EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
2 DEPENDENT SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
not_in
NULL
......
mysql-test/r/subselect_mat.result
View file @ 2a498b39
......@@ -1213,7 +1213,7 @@ EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
pk
2
......@@ -1363,7 +1363,7 @@ EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY subselect2 eq_ref unique_key unique_key 5 func 1
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
pk
2
......
mysql-test/r/subselect_sj.result
View file @ 2a498b39
......@@ -812,7 +812,7 @@ EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY subselect2 eq_ref unique_key unique_key 13 func 1 1.00
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0);
......@@ -821,7 +821,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`c` = `test`.`t1`.`c`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0);
......@@ -831,7 +831,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` = `test`.`t1`.`d`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0);
......@@ -840,7 +840,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`e` = `test`.`t1`.`e`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0);
......@@ -850,7 +850,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`f` = `test`.`t1`.`f`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0);
......@@ -860,7 +860,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`g` = `test`.`t1`.`g`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0);
......@@ -870,7 +870,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`h` = `test`.`t1`.`h`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0);
......@@ -880,7 +880,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`i` = `test`.`t1`.`i`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0);
......@@ -890,7 +890,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`j` = `test`.`t1`.`j`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0);
......@@ -900,7 +900,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`k` = `test`.`t1`.`k`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0);
......
mysql-test/r/subselect_sj2.result
View file @ 2a498b39
......@@ -311,7 +311,7 @@ t2.Code IN (SELECT Country FROM t3
WHERE Language='English' AND Percentage > 10 AND
t2.Population > 100000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range Population,Country Population 4 NULL 1 Using index condition; Using MRR
1 PRIMARY t1 range Population,Country Population 4 NULL 1 Using index condition; Rowid-ordered scan
1 PRIMARY t3 eq_ref PRIMARY,Percentage PRIMARY 33 test.t1.Country,const 1 Using index condition; Using where
1 PRIMARY t2 eq_ref PRIMARY,Population PRIMARY 3 test.t1.Country 1 Using where
DROP TABLE t1,t2,t3;
......
mysql-test/r/subselect_sj2_jcl6.result
View file @ 2a498b39
......@@ -40,7 +40,7 @@ a b
explain select * from t2 where b in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 3
1 PRIMARY t2 ref b b 5 test.t1.a 2 Using join buffer (flat, BKA join)
1 PRIMARY t2 ref b b 5 test.t1.a 2 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where
select * from t2 where b in (select a from t1);
a b
......@@ -83,7 +83,7 @@ from t0 A, t0 B where B.a <5;
explain select * from t3 where b in (select a from t0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 10
1 PRIMARY t3 ref b b 5 test.t0.a 1 Using join buffer (flat, BKA join)
1 PRIMARY t3 ref b b 5 test.t0.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
set @save_ecp= @@engine_condition_pushdown;
set engine_condition_pushdown=0;
......@@ -318,9 +318,9 @@ t2.Code IN (SELECT Country FROM t3
WHERE Language='English' AND Percentage > 10 AND
t2.Population > 100000);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range Population,Country Population 4 NULL 1 Using index condition; Using MRR
1 PRIMARY t3 eq_ref PRIMARY,Percentage PRIMARY 33 test.t1.Country,const 1 Using index condition; Using where; Using join buffer (flat, BKA join)
1 PRIMARY t2 eq_ref PRIMARY,Population PRIMARY 3 test.t1.Country 1 Using where; Using join buffer (incremental, BKA join)
1 PRIMARY t1 range Population,Country Population 4 NULL 1 Using index condition; Rowid-ordered scan
1 PRIMARY t3 eq_ref PRIMARY,Percentage PRIMARY 33 test.t1.Country,const 1 Using index condition; Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY,Population PRIMARY 3 test.t1.Country 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
DROP TABLE t1,t2,t3;
CREATE TABLE t1 (
Code char(3) NOT NULL DEFAULT '',
......@@ -434,8 +434,8 @@ where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using join buffer (flat, BKA join)
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary; Using join buffer (incremental, BKA join)
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
Warnings:
Note 1276 Field or reference 'test.t0.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where ((`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t1`.`a` = `test`.`t0`.`a`) and (`test`.`t2`.`a` = `test`.`t0`.`a`))
......
mysql-test/r/subselect_sj_jcl6.result
View file @ 2a498b39
......@@ -60,7 +60,7 @@ flattening a nested subquery
explain select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKA join)
1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 Using index
select * from t1 where a in (select pk from t10 where t10.a in (select pk from t12));
a b
......@@ -71,7 +71,7 @@ flattening subquery w/ several tables
explain extended select * from t1 where a in (select t10.pk from t10, t12 where t12.pk=t10.a);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using where; Using join buffer (flat, BKA join)
1 PRIMARY t10 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t12` join `test`.`t1` where ((`test`.`t10`.`pk` = `test`.`t1`.`a`) and (`test`.`t12`.`pk` = `test`.`t10`.`a`))
......@@ -516,7 +516,7 @@ EXPLAIN EXTENDED SELECT vkey FROM t0 WHERE pk IN
(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL PRIMARY NULL NULL NULL 5 100.00
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t0.pk 1 100.00 Using where; Using join buffer (flat, BKA join)
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t0.pk 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 ref vkey vkey 4 test.t1.vnokey 2 100.00 Using index; FirstMatch(t1)
Warnings:
Note 1003 select `test`.`t0`.`vkey` AS `vkey` from `test`.`t0` `t1` semi join (`test`.`t0` `t2`) join `test`.`t0` where ((`test`.`t2`.`vkey` = `test`.`t1`.`vnokey`) and (`test`.`t1`.`pk` = `test`.`t0`.`pk`))
......@@ -820,7 +820,7 @@ EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY subselect2 eq_ref unique_key unique_key 13 func 1 1.00
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using MRR
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (a, b) IN (SELECT a, b FROM t2 WHERE pk > 0);
......@@ -829,7 +829,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`c` = `test`.`t1`.`c`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, c) IN (SELECT b, c FROM t2 WHERE pk > 0);
......@@ -839,7 +839,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`d` = `test`.`t1`.`d`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, d) IN (SELECT b, d FROM t2 WHERE pk > 0);
......@@ -848,7 +848,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`e` = `test`.`t1`.`e`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, e) IN (SELECT b, e FROM t2 WHERE pk > 0);
......@@ -858,7 +858,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`f` = `test`.`t1`.`f`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, f) IN (SELECT b, f FROM t2 WHERE pk > 0);
......@@ -868,7 +868,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`g` = `test`.`t1`.`g`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, g) IN (SELECT b, g FROM t2 WHERE pk > 0);
......@@ -878,7 +878,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`h` = `test`.`t1`.`h`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, h) IN (SELECT b, h FROM t2 WHERE pk > 0);
......@@ -888,7 +888,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`i` = `test`.`t1`.`i`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, i) IN (SELECT b, i FROM t2 WHERE pk > 0);
......@@ -898,7 +898,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`j` = `test`.`t1`.`j`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, j) IN (SELECT b, j FROM t2 WHERE pk > 0);
......@@ -908,7 +908,7 @@ pk
EXPLAIN EXTENDED SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Using MRR; FirstMatch(t1); Using join buffer (flat, BNL join)
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 100.00 Using index condition; Using where; Rowid-ordered scan; FirstMatch(t1); Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`k` = `test`.`t1`.`k`) and (`test`.`t2`.`b` = `test`.`t1`.`b`) and (`test`.`t2`.`pk` > 0))
SELECT pk FROM t1 WHERE (b, k) IN (SELECT b, k FROM t2 WHERE pk > 0);
......@@ -1268,8 +1268,8 @@ SELECT * FROM t0 WHERE t0.a IN
(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 5 Using where; Start temporary
1 PRIMARY t1 ref a a 5 test.t0.a 1 Using join buffer (flat, BKA join)
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using where; End temporary; Using join buffer (incremental, BKA join)
1 PRIMARY t1 ref a a 5 test.t0.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using where; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT * FROM t0 WHERE t0.a IN
(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);
a
......
mysql-test/r/table_elim.result
View file @ 2a498b39
......@@ -128,7 +128,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3
This should use facts and a1 tables:
explain extended select id from v1 where attr1 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Using MRR
1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Rowid-ordered scan
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #1
......@@ -136,7 +136,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` whe
This should use facts, a2 and its subquery:
explain extended select id from v1 where attr2 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using where; Using MRR
1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using where; Rowid-ordered scan
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using index
3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.a2.id 2 100.00 Using index
Warnings:
......@@ -156,7 +156,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3
This should use facts and a1 tables:
explain extended select id from v2 where attr1 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Using MRR
1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Rowid-ordered scan
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #1
......@@ -164,7 +164,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` whe
This should use facts, a2 and its subquery:
explain extended select id from v2 where attr2 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using MRR
1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Rowid-ordered scan
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using where; Using index
3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.f.id 2 100.00 Using index
Warnings:
......@@ -416,7 +416,7 @@ select t1.*
from t1 left join t2 on (t2.pk=3 and t2.b=3) or (t2.pk= 4 and t2.b=3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where; Using MRR
1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 2 Using where; Rowid-ordered scan
drop table t1, t2;
#
# LPBUG#523593: Running RQG optimizer_no_subquery crashes MariaDB
......
mysql-test/suite/innodb/r/innodb.result
View file @ 2a498b39
......@@ -1219,7 +1219,7 @@ count(*)
623
explain select * from t1 where c between 1 and 2500;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL # Using index condition; Using MRR
1 SIMPLE t1 range c c 5 NULL # Using index condition; Rowid-ordered scan
update t1 set c=a;
explain select * from t1 where c between 1 and 2500;
id select_type table type possible_keys key key_len ref rows Extra
......
mysql-test/suite/maria/r/maria.result
View file @ 2a498b39
......@@ -389,10 +389,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref a a 4 test.t2.a 3
explain select * from t1 where a=0 or a=2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Using MRR
1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Rowid-ordered scan
explain select * from t1 force index (a) where a=0 or a=2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Using MRR
1 SIMPLE t1 range a a 4 NULL 4 Using index condition; Rowid-ordered scan
explain select * from t1 where c=1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref c,c_2 c 5 const 1
......
mysql-test/suite/vcol/r/vcol_misc.result
View file @ 2a498b39
......@@ -144,7 +144,7 @@ explain
select * from t1,t2 where t1.b=t2.c and d <= 100;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t2 ref idx idx 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join)
1 SIMPLE t2 ref idx idx 5 test.t1.b 2 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
select * from t1,t2 where t1.b=t2.c and d <= 100;
a b c d v
4 20 20 100 101
......
mysql-test/suite/vcol/r/vcol_select_innodb.result
View file @ 2a498b39
......@@ -44,7 +44,7 @@ a b c
1 -1 -1
explain select * from t3 where c>=-1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using MRR
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Rowid-ordered scan
# select_type=SIMPLE, type=ref
select * from t1,t3 where t1.c=t3.c and t3.c=-1;
a b c a b c
......@@ -141,7 +141,7 @@ a b c
2 -2 -2
explain select * from t3 where c >= -2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using MRR
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Rowid-ordered scan
# SELECT * FROM tbl_name WHERE <non-vcol expr>
select * from t3 where a between 1 and 2;
a b c
......@@ -165,7 +165,7 @@ a b c
2 -2 -2
explain select * from t3 where c between -2 and -1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using MRR
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Rowid-ordered scan
# SELECT * FROM tbl_name WHERE <non-vcol expr> ORDER BY <non-indexed vcol>
select * from t3 where a between 1 and 2 order by b;
a b c
......@@ -205,7 +205,7 @@ a b c
1 -1 -1
explain select * from t3 where c between -2 and -1 order by b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using MRR; Using filesort
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Rowid-ordered scan; Using filesort
# SELECT * FROM tbl_name WHERE <non-indexed vcol expr> ORDER BY <indexed vcol>
select * from t3 where b between -2 and -1 order by c;
a b c
......
mysql-test/suite/vcol/r/vcol_select_myisam.result
View file @ 2a498b39
......@@ -44,7 +44,7 @@ a b c
1 -1 -1
explain select * from t3 where c>=-1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 2 Using index condition; Using MRR
1 SIMPLE t3 range c c 5 NULL 2 Using index condition; Rowid-ordered scan
# select_type=SIMPLE, type=ref
select * from t1,t3 where t1.c=t3.c and t3.c=-1;
a b c a b c
......@@ -141,7 +141,7 @@ a b c
1 -1 -1
explain select * from t3 where c >= -2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 2 Using index condition; Using MRR
1 SIMPLE t3 range c c 5 NULL 2 Using index condition; Rowid-ordered scan
# SELECT * FROM tbl_name WHERE <non-vcol expr>
select * from t3 where a between 1 and 2;
a b c
......@@ -149,7 +149,7 @@ a b c
1 -1 -1
explain select * from t3 where a between 1 and 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using MRR
1 SIMPLE t3 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
# SELECT * FROM tbl_name WHERE <non-indexed vcol expr>
select * from t3 where b between -2 and -1;
a b c
......@@ -165,7 +165,7 @@ a b c
1 -1 -1
explain select * from t3 where c between -2 and -1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using MRR
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Rowid-ordered scan
# SELECT * FROM tbl_name WHERE <non-vcol expr> ORDER BY <indexed vcol>
select * from t3 where a between 1 and 2 order by c;
a b c
......@@ -173,7 +173,7 @@ a b c
1 -1 -1
explain select * from t3 where a between 1 and 2 order by c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using where; Using MRR; Using filesort
1 SIMPLE t3 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Using where; Rowid-ordered scan; Using filesort
# SELECT * FROM tbl_name WHERE <non-indexed vcol expr> ORDER BY <non-vcol>
select * from t3 where b between -2 and -1 order by a;
a b c
......@@ -189,7 +189,7 @@ a b c
2 -2 -2
explain select * from t3 where c between -2 and -1 order by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using where; Using MRR; Using filesort
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using where; Rowid-ordered scan; Using filesort
# SELECT * FROM tbl_name WHERE <non-indexed vcol expr> ORDER BY <non-indexed vcol>
select * from t3 where b between -2 and -1 order by b;
a b c
......@@ -205,7 +205,7 @@ a b c
1 -1 -1
explain select * from t3 where c between -2 and -1 order by b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Using MRR; Using filesort
1 SIMPLE t3 range c c 5 NULL 1 Using index condition; Rowid-ordered scan; Using filesort
# SELECT * FROM tbl_name WHERE <non-indexed vcol expr> ORDER BY <indexed vcol>
select * from t3 where b between -2 and -1 order by c;
a b c
......
sql/handler.h
View file @ 2a498b39
......@@ -1358,6 +1358,31 @@ void get_sweep_read_cost(TABLE *table, ha_rows nrows, bool interrupted,
*/
#define HA_MRR_MATERIALIZED_KEYS 256
/*
The following bits are reserved for use by MRR implementation. The intended
use scenario:
* sql layer calls handler->multi_range_read_info[_const]()
- MRR implementation figures out what kind of scan it will perform, saves
the result in *mrr_mode parameter.
* sql layer remembers what was returned in *mrr_mode
* the optimizer picks the query plan (which may or may not include the MRR
scan that was estimated by the multi_range_read_info[_const] call)
* if the query is an EXPLAIN statement, sql layer will call
handler->multi_range_read_explain_info(mrr_mode) to get a text description
of the picked MRR scan; the description will be a part of EXPLAIN output.
*/
#define HA_MRR_IMPLEMENTATION_FLAG1 512
#define HA_MRR_IMPLEMENTATION_FLAG2 1024
#define HA_MRR_IMPLEMENTATION_FLAG3 2048
#define HA_MRR_IMPLEMENTATION_FLAG4 4096
#define HA_MRR_IMPLEMENTATION_FLAG5 8192
#define HA_MRR_IMPLEMENTATION_FLAG6 16384
#define HA_MRR_IMPLEMENTATION_FLAGS \
(512 | 1024 | 2048 | 4096 | 8192 | 16384)
/*
This is a buffer area that the handler can use to store rows.
......@@ -1863,14 +1888,40 @@ public:
virtual ha_rows multi_range_read_info_const(uint keyno, RANGE_SEQ_IF *seq,
void *seq_init_param,
uint n_ranges, uint *bufsz,
uint *flags, COST_VECT *cost);
uint *mrr_mode, COST_VECT *cost);
virtual ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys,
uint key_parts, uint *bufsz,
uint *flags, COST_VECT *cost);
uint *mrr_mode, COST_VECT *cost);
virtual int multi_range_read_init(RANGE_SEQ_IF *seq, void *seq_init_param,
uint n_ranges, uint mode,
uint n_ranges, uint mrr_mode,
HANDLER_BUFFER *buf);
virtual int multi_range_read_next(range_id_t *range_info);
/*
Return string representation of the MRR plan.
This is intended to be used for EXPLAIN, via the following scenario:
1. SQL layer calls handler->multi_range_read_info().
1.1. Storage engine figures out whether it will use some non-default
MRR strategy, sets appropritate bits in *mrr_mode, and returns
control to SQL layer
2. SQL layer remembers the returned mrr_mode
3. SQL layer compares various options and choses the final query plan. As
a part of that, it makes a choice of whether to use the MRR strategy
picked in 1.1
4. EXPLAIN code converts the query plan to its text representation. If MRR
strategy is part of the plan, it calls
multi_range_read_explain_info(mrr_mode) to get a text representation of
the picked MRR strategy.
@param mrr_mode Mode which was returned by multi_range_read_info[_const]
@param str INOUT string to be printed for EXPLAIN
@param str_end End of the string buffer. The function is free to put the
string into [str..str_end] memory range.
*/
virtual int multi_range_read_explain_info(uint mrr_mode, char *str,
size_t size)
{ return 0; }
virtual int read_range_first(const key_range *start_key,
const key_range *end_key,
bool eq_range, bool sorted);
......
sql/multi_range_read.cc
View file @ 2a498b39
......@@ -1372,7 +1372,7 @@ ha_rows DsMrr_impl::dsmrr_info(uint keyno, uint n_ranges, uint rows,
DBUG_ASSERT(!res);
if ((*flags & HA_MRR_USE_DEFAULT_IMPL) ||
choose_mrr_impl(keyno, rows, &def_flags, &def_bufsz, cost))
choose_mrr_impl(keyno, rows, flags, bufsz, cost))
{
/* Default implementation is choosen */
DBUG_PRINT("info", ("Default MRR implementation choosen"));
......@@ -1517,11 +1517,13 @@ bool DsMrr_impl::choose_mrr_impl(uint keyno, ha_rows rows, uint *flags,
bool doing_cpk_scan= check_cpk_scan(thd, keyno, *flags);
bool using_cpk= test(keyno == table->s->primary_key &&
primary_file->primary_key_is_clustered());
*flags &= ~HA_MRR_IMPLEMENTATION_FLAGS;
if (thd->variables.optimizer_use_mrr == 2 || *flags & HA_MRR_INDEX_ONLY ||
(using_cpk && !doing_cpk_scan) || key_uses_partial_cols(table, keyno))
{
/* Use the default implementation */
*flags |= HA_MRR_USE_DEFAULT_IMPL;
*flags &= ~HA_MRR_IMPLEMENTATION_FLAGS;
return TRUE;
}
......@@ -1549,9 +1551,24 @@ bool DsMrr_impl::choose_mrr_impl(uint keyno, ha_rows rows, uint *flags,
*cost= dsmrr_cost;
res= FALSE;
if ((using_cpk && doing_cpk_scan) ||
(optimizer_flag(thd, OPTIMIZER_SWITCH_MRR_SORT_KEYS) &&
*flags & HA_MRR_SINGLE_POINT))
{
*flags |= DSMRR_IMPL_SORT_KEYS;
}
if (!(using_cpk && doing_cpk_scan) &&
!(*flags & HA_MRR_INDEX_ONLY))
{
*flags |= DSMRR_IMPL_SORT_ROWIDS;
}
/*
if ((*flags & HA_MRR_SINGLE_POINT) &&
optimizer_flag(thd, OPTIMIZER_SWITCH_MRR_SORT_KEYS))
*flags |= HA_MRR_MATERIALIZED_KEYS;
*/
}
else
{
......@@ -1561,6 +1578,38 @@ bool DsMrr_impl::choose_mrr_impl(uint keyno, ha_rows rows, uint *flags,
return res;
}
/*
Take the flags we've returned previously and print one of
- Key-ordered scan
- Rowid-ordered scan
- Key-ordered Rowid-ordered scan
*/
int DsMrr_impl::dsmrr_explain_info(uint mrr_mode, char *str, size_t size)
{
const char *key_ordered= "Key-ordered scan";
const char *rowid_ordered= "Rowid-ordered scan";
const char *both_ordered= "Key-ordered Rowid-ordered scan";
const char *used_str="";
const uint BOTH_FLAGS= (DSMRR_IMPL_SORT_KEYS | DSMRR_IMPL_SORT_ROWIDS);
if (!(mrr_mode & HA_MRR_USE_DEFAULT_IMPL))
{
if ((mrr_mode & BOTH_FLAGS) == BOTH_FLAGS)
used_str= both_ordered;
else if (mrr_mode & DSMRR_IMPL_SORT_KEYS)
used_str= key_ordered;
else if (mrr_mode & DSMRR_IMPL_SORT_ROWIDS)
used_str= rowid_ordered;
uint used_str_len= strlen(used_str);
uint copy_len= min(used_str_len, size);
memcpy(str, used_str, size);
return copy_len;
}
return 0;
}
static void get_sort_and_sweep_cost(TABLE *table, ha_rows nrows, COST_VECT *cost);
......
sql/multi_range_read.h
View file @ 2a498b39
......@@ -395,6 +395,9 @@ public:
};
#define DSMRR_IMPL_SORT_KEYS HA_MRR_IMPLEMENTATION_FLAG1
#define DSMRR_IMPL_SORT_ROWIDS HA_MRR_IMPLEMENTATION_FLAG2
/*
DS-MRR implementation for one table. Create/use one object of this class for
each ha_{myisam/innobase/etc} object. That object will be further referred to
......@@ -548,6 +551,8 @@ public:
ha_rows dsmrr_info_const(uint keyno, RANGE_SEQ_IF *seq,
void *seq_init_param, uint n_ranges, uint *bufsz,
uint *flags, COST_VECT *cost);
int dsmrr_explain_info(uint mrr_mode, char *str, size_t size);
private:
/* Buffer to store (key, range_id) pairs */
Lifo_buffer *key_buffer;
......
sql/sql_join_cache.cc
View file @ 2a498b39
......@@ -2491,7 +2491,35 @@ void JOIN_CACHE::print_explain_comment(String *str)
str->append(join_alg);
str->append(STRING_WITH_LEN(" join"));
str->append(STRING_WITH_LEN(")"));
}
static void add_mrr_explain_info(String *str, uint mrr_mode, handler *file)
{
char mrr_str_buf[128]={0};
int len;
len= file->multi_range_read_explain_info(mrr_mode, mrr_str_buf,
sizeof(mrr_str_buf));
if (len > 0)
{
str->append(STRING_WITH_LEN("; "));
str->append(mrr_str_buf, len);
}
}
void JOIN_CACHE_BKA::print_explain_comment(String *str)
{
JOIN_CACHE::print_explain_comment(str);
add_mrr_explain_info(str, mrr_mode, join_tab->table->file);
}
void JOIN_CACHE_BKAH::print_explain_comment(String *str)
{
JOIN_CACHE::print_explain_comment(str);
add_mrr_explain_info(str, mrr_mode, join_tab->table->file);
}
/*
......
sql/sql_join_cache.h
View file @ 2a498b39
......@@ -637,7 +637,7 @@ public:
enum_nested_loop_state join_records(bool skip_last);
/* Add a comment on the join algorithm employed by the join cache */
void print_explain_comment(String *str);
virtual void print_explain_comment(String *str);
virtual ~JOIN_CACHE() {}
void reset_join(JOIN *j) { join= j; }
......@@ -1315,6 +1315,7 @@ public:
/* Check index condition of the joined table for a record from BKA cache */
bool skip_index_tuple(range_id_t range_info);
void print_explain_comment(String *str);
};
......@@ -1404,4 +1405,6 @@ public:
/* Check index condition of the joined table for a record from BKAH cache */
bool skip_index_tuple(range_id_t range_info);
void print_explain_comment(String *str);
};
sql/sql_select.cc
View file @ 2a498b39
......@@ -19648,12 +19648,30 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
if (table->reginfo.not_exists_optimize)
extra.append(STRING_WITH_LEN("; Not exists"));
/*
if (quick_type == QUICK_SELECT_I::QS_TYPE_RANGE &&
!(((QUICK_RANGE_SELECT*)(tab->select->quick))->mrr_flags &
HA_MRR_USE_DEFAULT_IMPL))
{
extra.append(STRING_WITH_LEN("; Using MRR"));
}
*/
if (quick_type == QUICK_SELECT_I::QS_TYPE_RANGE)
{
char mrr_str_buf[128];
mrr_str_buf[0]=0;
int len;
uint mrr_flags=
((QUICK_RANGE_SELECT*)(tab->select->quick))->mrr_flags;
len= table->file->multi_range_read_explain_info(mrr_flags,
mrr_str_buf,
sizeof(mrr_str_buf));
if (len > 0)
{
extra.append(STRING_WITH_LEN("; "));
extra.append(mrr_str_buf, len);
}
}
if (need_tmp_table)
{
......
storage/maria/ha_maria.cc
View file @ 2a498b39
......@@ -3665,6 +3665,11 @@ ha_rows ha_maria::multi_range_read_info(uint keyno, uint n_ranges, uint keys,
return ds_mrr.dsmrr_info(keyno, n_ranges, keys, key_parts, bufsz, flags, cost);
}
int ha_maria::multi_range_read_explain_info(uint mrr_mode, char *str,
size_t size)
{
return ds_mrr.dsmrr_explain_info(mrr_mode, str, size);
}
/* MyISAM MRR implementation ends */
......
storage/maria/ha_maria.h
View file @ 2a498b39
......@@ -186,6 +186,7 @@ public:
ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys,
uint key_parts, uint *bufsz,
uint *flags, COST_VECT *cost);
int multi_range_read_explain_info(uint mrr_mode, char *str, size_t size);
/* Index condition pushdown implementation */
Item *idx_cond_push(uint keyno, Item* idx_cond);
......
storage/myisam/ha_myisam.cc
View file @ 2a498b39
......@@ -2281,6 +2281,13 @@ ha_rows ha_myisam::multi_range_read_info(uint keyno, uint n_ranges, uint keys,
return ds_mrr.dsmrr_info(keyno, n_ranges, keys, key_parts, bufsz, flags, cost);
}
int ha_myisam::multi_range_read_explain_info(uint mrr_mode, char *str,
size_t size)
{
return ds_mrr.dsmrr_explain_info(mrr_mode, str, size);
}
/* MyISAM MRR implementation ends */
......
storage/myisam/ha_myisam.h
View file @ 2a498b39
......@@ -170,6 +170,7 @@ public:
ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys,
uint key_parts, uint *bufsz,
uint *flags, COST_VECT *cost);
int multi_range_read_explain_info(uint mrr_mode, char *str, size_t size);
/* Index condition pushdown implementation */
Item *idx_cond_push(uint keyno, Item* idx_cond);
......
storage/xtradb/handler/ha_innodb.cc
View file @ 2a498b39
......@@ -12139,6 +12139,10 @@ ha_rows ha_innobase::multi_range_read_info(uint keyno, uint n_ranges, uint keys,
return res;
}
int ha_innobase::multi_range_read_explain_info(uint mrr_mode, char *str, size_t size)
{
return ds_mrr.dsmrr_explain_info(mrr_mode, str, size);
}
/*
A helper function used only in index_cond_func_innodb
......
storage/xtradb/handler/ha_innodb.h
View file @ 2a498b39
......@@ -237,6 +237,7 @@ public:
ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys,
uint key_parts, uint *bufsz,
uint *flags, COST_VECT *cost);
int multi_range_read_explain_info(uint mrr_mode, char *str, size_t size);
DsMrr_impl ds_mrr;
Item *idx_cond_push(uint keyno, Item* idx_cond);
......
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