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Commit 7402fd6e authored by gkodinov/kgeorge@magare.gmz's avatar gkodinov/kgeorge@magare.gmz
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Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 

into  magare.gmz:/home/kgeorge/mysql/autopush/B28951-5.0-opt
parents 336d4848 8fc401e2
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Showing with 309 additions and 2 deletions
mysql-test/r/innodb_mysql.result
View file @ 7402fd6e
...@@ -739,4 +739,249 @@ drop table if exists t1; ...@@ -739,4 +739,249 @@ drop table if exists t1;
create table t1 (a int) engine=innodb; create table t1 (a int) engine=innodb;
alter table t1 alter a set default 1; alter table t1 alter a set default 1;
drop table t1; drop table t1;
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
INSERT INTO t1 SELECT a + 8, 2 FROM t1;
INSERT INTO t1 SELECT a + 16, 1 FROM t1;
EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
id 1
select_type SIMPLE
table t1
type ref
possible_keys bkey
key bkey
key_len 5
ref const
rows 16
Extra Using where; Using index
SELECT * FROM t1 WHERE b=2 ORDER BY a;
a b
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
id 1
select_type SIMPLE
table t1
type range
possible_keys bkey
key bkey
key_len 5
ref NULL
rows 16
Extra Using where; Using index; Using filesort
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
a b
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 1
32 1
EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
id 1
select_type SIMPLE
table t1
type range
possible_keys bkey
key bkey
key_len 5
ref NULL
rows 16
Extra Using where; Using index
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
a b
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 1
32 1
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 5
ref const
rows 8
Extra Using where; Using index; Using filesort
SELECT * FROM t2 WHERE b=1 ORDER BY a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
DROP TABLE t1,t2;
End of 5.0 tests End of 5.0 tests
mysql-test/t/innodb_mysql.test
View file @ 7402fd6e
...@@ -754,4 +754,37 @@ create table t1 (a int) engine=innodb; ...@@ -754,4 +754,37 @@ create table t1 (a int) engine=innodb;
alter table t1 alter a set default 1; alter table t1 alter a set default 1;
drop table t1; drop table t1;
#
# Bug #28591: MySQL need not sort the records in case of ORDER BY
# primary_key on InnoDB table
#
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
INSERT INTO t1 SELECT a + 8, 2 FROM t1;
INSERT INTO t1 SELECT a + 16, 1 FROM t1;
query_vertical EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
SELECT * FROM t1 WHERE b=2 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
SELECT * FROM t2 WHERE b=1 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
DROP TABLE t1,t2;
--echo End of 5.0 tests --echo End of 5.0 tests
sql/sql_select.cc
View file @ 7402fd6e
...@@ -12009,6 +12009,7 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx, ...@@ -12009,6 +12009,7 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
key_part_end=key_part+table->key_info[idx].key_parts; key_part_end=key_part+table->key_info[idx].key_parts;
key_part_map const_key_parts=table->const_key_parts[idx]; key_part_map const_key_parts=table->const_key_parts[idx];
int reverse=0; int reverse=0;
my_bool on_primary_key= FALSE;
DBUG_ENTER("test_if_order_by_key"); DBUG_ENTER("test_if_order_by_key");
for (; order ; order=order->next, const_key_parts>>=1) for (; order ; order=order->next, const_key_parts>>=1)
...@@ -12023,7 +12024,30 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx, ...@@ -12023,7 +12024,30 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
for (; const_key_parts & 1 ; const_key_parts>>= 1) for (; const_key_parts & 1 ; const_key_parts>>= 1)
key_part++; key_part++;
if (key_part == key_part_end || key_part->field != field) if (key_part == key_part_end)
{
/*
We are at the end of the key. Check if the engine has the primary
key as a suffix to the secondary keys. If it has continue to check
the primary key as a suffix.
*/
if (!on_primary_key &&
(table->file->table_flags() & HA_PRIMARY_KEY_IN_READ_INDEX) &&
table->s->primary_key != MAX_KEY)
{
on_primary_key= TRUE;
key_part= table->key_info[table->s->primary_key].key_part;
key_part_end=key_part+table->key_info[table->s->primary_key].key_parts;
const_key_parts=table->const_key_parts[table->s->primary_key];
for (; const_key_parts & 1 ; const_key_parts>>= 1)
key_part++;
}
else
DBUG_RETURN(0);
}
if (key_part->field != field)
DBUG_RETURN(0); DBUG_RETURN(0);
/* set flag to 1 if we can use read-next on key, else to -1 */ /* set flag to 1 if we can use read-next on key, else to -1 */
...@@ -12034,7 +12058,8 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx, ...@@ -12034,7 +12058,8 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
reverse=flag; // Remember if reverse reverse=flag; // Remember if reverse
key_part++; key_part++;
} }
*used_key_parts= (uint) (key_part - table->key_info[idx].key_part); *used_key_parts= on_primary_key ? table->key_info[idx].key_parts :
(uint) (key_part - table->key_info[idx].key_part);
if (reverse == -1 && !(table->file->index_flags(idx, *used_key_parts-1, 1) & if (reverse == -1 && !(table->file->index_flags(idx, *used_key_parts-1, 1) &
HA_READ_PREV)) HA_READ_PREV))
reverse= 0; // Index can't be used reverse= 0; // Index can't be used
......
sql/table.cc
View file @ 7402fd6e
...@@ -780,7 +780,11 @@ int openfrm(THD *thd, const char *name, const char *alias, uint db_stat, ...@@ -780,7 +780,11 @@ int openfrm(THD *thd, const char *name, const char *alias, uint db_stat,
the primary key, then we can use any key to find this column the primary key, then we can use any key to find this column
*/ */
if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX) if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX)
{
field->part_of_key= share->keys_in_use; field->part_of_key= share->keys_in_use;
if (field->part_of_sortkey.is_set(key))
field->part_of_sortkey= share->keys_in_use;
}
} }
if (field->key_length() != key_part->length) if (field->key_length() != key_part->length)
{ {
......
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