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Commit 1a7d1731 authored by Sergei Petrunia's avatar Sergei Petrunia
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Merge ../10.1-orderby-fixes into 10.1

parents 61d8b4a2 605b48d3
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Showing with 444 additions and 119 deletions
mysql-test/r/myisam_explain_non_select_all.result
View file @ 1a7d1731
......@@ -674,14 +674,14 @@ FLUSH STATUS;
FLUSH TABLES;
EXPLAIN EXTENDED SELECT * FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 3 100.00 Using where; Using index
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > 0) order by `test`.`t1`.`a`
# Status of EXPLAIN EXTENDED "equivalent" SELECT query execution
Variable_name Value
# Status of "equivalent" SELECT query execution:
Variable_name Value
Handler_read_first 1
Handler_read_key 1
Handler_read_next 3
# Status of testing query execution:
Variable_name Value
......
mysql-test/r/order_by.result
View file @ 1a7d1731
......@@ -297,7 +297,7 @@ create table t1 (a int not null, b int, c varchar(10), key (a, b, c));
insert into t1 values (1, NULL, NULL), (1, NULL, 'b'), (1, 1, NULL), (1, 1, 'b'), (1, 1, 'b'), (2, 1, 'a'), (2, 1, 'b'), (2, 2, 'a'), (2, 2, 'b'), (2, 3, 'c'),(1,3,'b');
explain select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index a a 22 NULL 11 Using where; Using index
1 SIMPLE t1 range a a 22 NULL 2 Using where; Using index
select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
a b c
1 NULL b
......@@ -2569,7 +2569,7 @@ SELECT * FROM t1 r JOIN t1 s ON r.a = s.a
WHERE s.a IN (2,9) OR s.a < 100 AND s.a != 0
ORDER BY 1 LIMIT 10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE r index PRIMARY PRIMARY 4 NULL 10 100.00 Using where; Using index
1 SIMPLE r range PRIMARY PRIMARY 4 NULL 12 100.00 Using where; Using index
1 SIMPLE s eq_ref PRIMARY PRIMARY 4 test.r.a 1 100.00 Using index
Warnings:
Note 1003 select `test`.`r`.`a` AS `a`,`test`.`s`.`a` AS `a` from `test`.`t1` `r` join `test`.`t1` `s` where ((`test`.`s`.`a` = `test`.`r`.`a`) and ((`test`.`r`.`a` in (2,9)) or ((`test`.`r`.`a` < 100) and (`test`.`r`.`a` <> 0)))) order by 1 limit 10
......@@ -2600,7 +2600,7 @@ CREATE TABLE t1 (a INT,KEY (a));
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
EXPLAIN SELECT DISTINCT a,1 FROM t1 WHERE a <> 1 ORDER BY a DESC;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index a a 5 NULL 10 Using where; Using index; Using filesort
1 SIMPLE t1 range a a 5 NULL 10 Using where; Using index
SELECT DISTINCT a,1 FROM t1 WHERE a <> 1 ORDER BY a DESC;
a 1
10 1
......
mysql-test/r/order_by_optimizer_innodb.result 0 → 100644
View file @ 1a7d1731
drop table if exists t0,t1,t2,t3;
#
# MDEV-6402: Optimizer doesn't choose best execution plan when composite key is used
#
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1(a int);
insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
CREATE TABLE t2 (
pk1 int(11) NOT NULL,
pk2 int(11) NOT NULL,
fd5 bigint(20) DEFAULT NULL,
filler1 char(200),
filler2 char(200),
PRIMARY KEY (pk1,pk2),
UNIQUE KEY ux_pk1_fd5 (pk1,fd5)
) ENGINE=InnoDB;
insert into t2
select
round(log(2,t1.a+1)),
t1.a,
t1.a,
REPEAT('filler-data-', 10),
REPEAT('filler-data-', 10)
from
t1;
select pk1, count(*) from t2 group by pk1;
pk1 count(*)
0 1
1 1
2 3
3 6
4 11
5 23
6 45
7 91
8 181
9 362
10 276
# The following should use range(ux_pk1_fd5), two key parts (key_len=5+8=13)
EXPLAIN SELECT * FROM t2 USE INDEX(ux_pk1_fd5) WHERE pk1=9 AND fd5 < 500 ORDER BY fd5 DESC LIMIT 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range ux_pk1_fd5 ux_pk1_fd5 13 NULL 137 Using where
# This also must use range, not ref. key_len must be 13
EXPLAIN SELECT * FROM t2 WHERE pk1=9 AND fd5 < 500 ORDER BY fd5 DESC LIMIT 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range PRIMARY,ux_pk1_fd5 ux_pk1_fd5 13 NULL 137 Using where
drop table t0,t1, t2;
#
# MDEV-6814: Server crashes in calculate_key_len on query with ORDER BY
#
CREATE TABLE t1 (f1 INT, f2 INT, f3 INT, KEY(f2),KEY(f2,f1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,5,0),(2,6,0);
SELECT * FROM t1 WHERE f1 < 3 AND f2 IS NULL ORDER BY f1;
f1 f2 f3
DROP TABLE t1;
#
# MDEV-6796: Unable to skip filesort when using implicit extended key
#
CREATE TABLE t1 (
pk1 int(11) NOT NULL,
pk2 varchar(64) NOT NULL,
col1 varchar(16) DEFAULT NULL,
PRIMARY KEY (pk1,pk2),
KEY key1 (pk1,col1)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE t2 (
pk1 int(11) NOT NULL,
pk2 varchar(64) NOT NULL,
col1 varchar(16) DEFAULT NULL,
PRIMARY KEY (pk1,pk2),
KEY key1 (pk1,col1,pk2)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `t1` VALUES
(12321321,'a8f5f167f44f4964e6c998dee827110c','video'),
(12321321,'d77a17a3659ffa60c54e0ea17b6c6d16','video'),
(12321321,'wwafdsafdsafads','video'),
(12321321,'696aa249f0738e8181957dd57c2d7d0b','video-2014-09-23'),
(12321321,'802f9f29584b486f356693e3aa4ef0af','video=sdsd'),
(12321321,'2f94543ff74aab82e9a058b4e8316d75','video=sdsdsds'),
(12321321,'c1316b9df0d203fd1b9035308de52a0a','video=sdsdsdsdsd');
insert into t2 select * from t1;
# this must not use filesort:
explain SELECT pk2
FROM t1 USE INDEX(key1)
WHERE pk1 = 123
AND col1 = 'video'
ORDER BY pk2 DESC LIMIT 21;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref key1 key1 55 const,const 1 Using where; Using index
# this must not use filesort, either:
explain SELECT pk2
FROM t2 USE INDEX(key1)
WHERE pk1 = 123 AND col1 = 'video'
ORDER BY pk2 DESC LIMIT 21;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref key1 key1 55 const,const 1 Using where; Using index
drop table t1, t2;
mysql-test/r/show_explain.result
View file @ 1a7d1731
......@@ -1036,7 +1036,7 @@ explain
SELECT b AS field1, b AS field2 FROM t1, t2, t3 WHERE d = b ORDER BY field1, field2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 system NULL NULL NULL NULL 1
1 SIMPLE t1 index b b 6 NULL 107 Using where; Using index
1 SIMPLE t1 range b b 6 NULL 107 Using where; Using index
1 SIMPLE t3 ref PRIMARY PRIMARY 5 test.t1.b 1 Using index
set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_do_select';
......@@ -1044,7 +1044,7 @@ SELECT b AS field1, b AS field2 FROM t1, t2, t3 WHERE d = b ORDER BY field1, fie
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 system NULL NULL NULL NULL 1 Using filesort
1 SIMPLE t1 index b b 6 NULL 107 Using where; Using index
1 SIMPLE t1 range b b 6 NULL 107 Using where; Using index
1 SIMPLE t3 ref PRIMARY PRIMARY 5 test.t1.b 1 Using index
Warnings:
Note 1003 SELECT b AS field1, b AS field2 FROM t1, t2, t3 WHERE d = b ORDER BY field1, field2
......
mysql-test/r/subselect.result
View file @ 1a7d1731
......@@ -6974,7 +6974,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......@@ -7008,7 +7008,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......
mysql-test/r/subselect_mat.result
View file @ 1a7d1731
......@@ -103,7 +103,7 @@ explain extended
select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index NULL # 18 # 3 100.00 #
2 MATERIALIZED t2i index it2i1,it2i3 # 9 # 5 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # 9 # 5 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select max(`test`.`t2i`.`b1`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where ((`test`.`t1i`.`a1` = `<subquery2>`.`max(b1)`))))))
select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);
......
mysql-test/r/subselect_no_exists_to_in.result
View file @ 1a7d1731
......@@ -6974,7 +6974,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......@@ -7008,7 +7008,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......
mysql-test/r/subselect_no_mat.result
View file @ 1a7d1731
......@@ -6968,7 +6968,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......@@ -7001,7 +7001,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......
mysql-test/r/subselect_no_opts.result
View file @ 1a7d1731
......@@ -6965,7 +6965,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......@@ -6999,7 +6999,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......
mysql-test/r/subselect_no_scache.result
View file @ 1a7d1731
......@@ -6980,7 +6980,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......@@ -7014,7 +7014,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......
mysql-test/r/subselect_no_semijoin.result
View file @ 1a7d1731
......@@ -6965,7 +6965,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......@@ -6999,7 +6999,7 @@ INSERT INTO t2 VALUES (45),(17),(20);
EXPLAIN SELECT * FROM t1 WHERE EXISTS ( SELECT a FROM t1, t2 WHERE b = a GROUP BY a HAVING a <> 1 ) ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t1 index a a 5 NULL 2 Using where; Using index
2 SUBQUERY t1 range a a 5 NULL 2 Using where; Using index
2 SUBQUERY t2 ref b b 5 test.t1.a 2 Using index
DROP TABLE t1,t2;
#
......
mysql-test/r/subselect_sj_mat.result
View file @ 1a7d1731
......@@ -107,7 +107,7 @@ select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i index it1i1,it1i3 # 18 # 3 100.00 #
1 PRIMARY <subquery2> eq_ref distinct_key # 8 # 1 100.00 #
2 MATERIALIZED t2i index it2i1,it2i3 # 9 # 5 100.00 #
2 MATERIALIZED t2i range it2i1,it2i3 # 9 # 5 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select max(`test`.`t2i`.`b1`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where (`<subquery2>`.`max(b1)` = `test`.`t1i`.`a1`)
select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);
......
mysql-test/t/order_by_optimizer_innodb.test 0 → 100644
View file @ 1a7d1731
--source include/have_innodb.inc
--disable_warnings
drop table if exists t0,t1,t2,t3;
--enable_warnings
--echo #
--echo # MDEV-6402: Optimizer doesn't choose best execution plan when composite key is used
--echo #
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1(a int);
insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
CREATE TABLE t2 (
pk1 int(11) NOT NULL,
pk2 int(11) NOT NULL,
fd5 bigint(20) DEFAULT NULL,
filler1 char(200),
filler2 char(200),
PRIMARY KEY (pk1,pk2),
UNIQUE KEY ux_pk1_fd5 (pk1,fd5)
) ENGINE=InnoDB;
insert into t2
select
round(log(2,t1.a+1)),
t1.a,
t1.a,
REPEAT('filler-data-', 10),
REPEAT('filler-data-', 10)
from
t1;
select pk1, count(*) from t2 group by pk1;
--echo # The following should use range(ux_pk1_fd5), two key parts (key_len=5+8=13)
EXPLAIN SELECT * FROM t2 USE INDEX(ux_pk1_fd5) WHERE pk1=9 AND fd5 < 500 ORDER BY fd5 DESC LIMIT 10;
--echo # This also must use range, not ref. key_len must be 13
EXPLAIN SELECT * FROM t2 WHERE pk1=9 AND fd5 < 500 ORDER BY fd5 DESC LIMIT 10;
drop table t0,t1, t2;
--echo #
--echo # MDEV-6814: Server crashes in calculate_key_len on query with ORDER BY
--echo #
CREATE TABLE t1 (f1 INT, f2 INT, f3 INT, KEY(f2),KEY(f2,f1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,5,0),(2,6,0);
SELECT * FROM t1 WHERE f1 < 3 AND f2 IS NULL ORDER BY f1;
DROP TABLE t1;
--echo #
--echo # MDEV-6796: Unable to skip filesort when using implicit extended key
--echo #
CREATE TABLE t1 (
pk1 int(11) NOT NULL,
pk2 varchar(64) NOT NULL,
col1 varchar(16) DEFAULT NULL,
PRIMARY KEY (pk1,pk2),
KEY key1 (pk1,col1)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE t2 (
pk1 int(11) NOT NULL,
pk2 varchar(64) NOT NULL,
col1 varchar(16) DEFAULT NULL,
PRIMARY KEY (pk1,pk2),
KEY key1 (pk1,col1,pk2)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `t1` VALUES
(12321321,'a8f5f167f44f4964e6c998dee827110c','video'),
(12321321,'d77a17a3659ffa60c54e0ea17b6c6d16','video'),
(12321321,'wwafdsafdsafads','video'),
(12321321,'696aa249f0738e8181957dd57c2d7d0b','video-2014-09-23'),
(12321321,'802f9f29584b486f356693e3aa4ef0af','video=sdsd'),
(12321321,'2f94543ff74aab82e9a058b4e8316d75','video=sdsdsds'),
(12321321,'c1316b9df0d203fd1b9035308de52a0a','video=sdsdsdsdsd');
insert into t2 select * from t1;
--echo # this must not use filesort:
explain SELECT pk2
FROM t1 USE INDEX(key1)
WHERE pk1 = 123
AND col1 = 'video'
ORDER BY pk2 DESC LIMIT 21;
--echo # this must not use filesort, either:
explain SELECT pk2
FROM t2 USE INDEX(key1)
WHERE pk1 = 123 AND col1 = 'video'
ORDER BY pk2 DESC LIMIT 21;
drop table t1, t2;
sql/field.h
View file @ 1a7d1731
......@@ -281,6 +281,12 @@ public:
LEX_STRING comment;
/* Field is part of the following keys */
key_map key_start, part_of_key, part_of_key_not_clustered;
/*
Bitmap of indexes that have records ordered by col1, ... this_field, ...
For example, INDEX (col(prefix_n)) is not present in col.part_of_sortkey.
*/
key_map part_of_sortkey;
/*
We use three additional unireg types for TIMESTAMP to overcome limitation
......
sql/opt_range.cc
View file @ 1a7d1731
......@@ -3064,7 +3064,7 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
param.alloced_sel_args= 0;
/* Calculate cost of full index read for the shortest covering index */
if (!head->covering_keys.is_clear_all())
if (!force_quick_range && !head->covering_keys.is_clear_all())
{
int key_for_use= find_shortest_key(head, &head->covering_keys);
double key_read_time= head->file->keyread_time(key_for_use, 1, records) +
......
sql/sql_select.cc
View file @ 1a7d1731
This diff is collapsed.
storage/tokudb/mysql-test/tokudb_mariadb/r/mdev6657.result 0 → 100644
View file @ 1a7d1731
drop table if exists t1,t2,t3;
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2(a int);
insert into t2 select A.a + B.a* 10 + C.a * 100 from t1 A, t1 B, t1 C;
CREATE TABLE t3 (
col1 int(10) unsigned NOT NULL DEFAULT '0',
col2 mediumint(8) unsigned NOT NULL DEFAULT '0',
col3 smallint(5) NOT NULL DEFAULT '1',
filler varchar(255) DEFAULT NULL,
PRIMARY KEY (col1,col2,col3),
KEY key1 (col1,col2) USING BTREE
) ENGINE=TokuDB DEFAULT CHARSET=latin1 PACK_KEYS=1 COMPRESSION=TOKUDB_LZMA;
insert into t3 select 1300000000+a, 12345, 7890, 'data' from t2;
insert into t3 select 1400000000+a, 12345, 7890, 'data' from t2;
insert into t3 select 1410799999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1410899999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1410999999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411099999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411199999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411299999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411399999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411499999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411599999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411699999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411899999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411999999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1412099999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1412199999+a, 12345, 7890, 'data' from t2;
# The following must use range(PRIMARY):
explain
select col1,col2,col3
from t3
where col1 <= 1410799999
order by col1 desc,col2 desc,col3 desc limit 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range PRIMARY,key1 PRIMARY 4 NULL 2001 Using where; Using index
# The same query but the constant is bigger.
# The query should use range(PRIMARY), not full index scan:
explain
select col1,col2,col3
from t3
where col1 <= 1412199999
order by col1 desc, col2 desc, col3 desc limit 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 range PRIMARY,key1 PRIMARY 4 NULL 15001 Using where; Using index
drop table t1,t2,t3;
storage/tokudb/mysql-test/tokudb_mariadb/t/mdev6657.test 0 → 100644
View file @ 1a7d1731
--disable_warnings
drop table if exists t1,t2,t3;
--enable_warnings
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2(a int);
insert into t2 select A.a + B.a* 10 + C.a * 100 from t1 A, t1 B, t1 C;
CREATE TABLE t3 (
col1 int(10) unsigned NOT NULL DEFAULT '0',
col2 mediumint(8) unsigned NOT NULL DEFAULT '0',
col3 smallint(5) NOT NULL DEFAULT '1',
filler varchar(255) DEFAULT NULL,
PRIMARY KEY (col1,col2,col3),
KEY key1 (col1,col2) USING BTREE
) ENGINE=TokuDB DEFAULT CHARSET=latin1 PACK_KEYS=1 COMPRESSION=TOKUDB_LZMA;
insert into t3 select 1300000000+a, 12345, 7890, 'data' from t2;
insert into t3 select 1400000000+a, 12345, 7890, 'data' from t2;
insert into t3 select 1410799999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1410899999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1410999999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411099999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411199999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411299999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411399999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411499999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411599999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411699999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411899999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1411999999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1412099999+a, 12345, 7890, 'data' from t2;
insert into t3 select 1412199999+a, 12345, 7890, 'data' from t2;
--echo # The following must use range(PRIMARY):
explain
select col1,col2,col3
from t3
where col1 <= 1410799999
order by col1 desc,col2 desc,col3 desc limit 1;
--echo # The same query but the constant is bigger.
--echo # The query should use range(PRIMARY), not full index scan:
explain
select col1,col2,col3
from t3
where col1 <= 1412199999
order by col1 desc, col2 desc, col3 desc limit 1;
drop table t1,t2,t3;
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