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Kirill Smelkov
mariadb
Commits
76d03e7a
Commit
76d03e7a
authored
Nov 21, 2011
by
Igor Babaev
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parents
f8dbbc01
b2e5a3f6
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5 changed files
with
99 additions
and
3 deletions
+99
-3
mysql-test/r/subselect_mat_cost_bugs.result
mysql-test/r/subselect_mat_cost_bugs.result
+2
-2
mysql-test/r/subselect_sj.result
mysql-test/r/subselect_sj.result
+33
-0
mysql-test/r/subselect_sj_jcl6.result
mysql-test/r/subselect_sj_jcl6.result
+33
-0
mysql-test/t/subselect_sj.test
mysql-test/t/subselect_sj.test
+30
-0
sql/opt_subselect.h
sql/opt_subselect.h
+1
-1
No files found.
mysql-test/r/subselect_mat_cost_bugs.result
View file @
76d03e7a
...
@@ -346,8 +346,8 @@ WHERE t4.a >= t3.b
...
@@ -346,8 +346,8 @@ WHERE t4.a >= t3.b
AND a = SOME (SELECT b FROM t5));
AND a = SOME (SELECT b FROM t5));
id select_type table type possible_keys key key_len ref rows Extra
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t5 index c c 10 NULL 2 Using where; Using index;
LooseScan
2 DEPENDENT SUBQUERY t5 index c c 10 NULL 2 Using where; Using index;
Start temporary
2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t5.b 1 Using index condition; Using where
2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t5.b 1 Using index condition; Using where
; End temporary
SELECT *
SELECT *
FROM t3
FROM t3
WHERE t3.b > ALL (
WHERE t3.b > ALL (
...
...
mysql-test/r/subselect_sj.result
View file @
76d03e7a
...
@@ -2050,4 +2050,37 @@ a
...
@@ -2050,4 +2050,37 @@ a
3
3
set optimizer_switch= @tmp_otimizer_switch;
set optimizer_switch= @tmp_otimizer_switch;
drop table t1,t2;
drop table t1,t2;
#
# Bug #887496: semijoin with IN equality for the second part of an index
#
CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (9), (0), (8), (5);
CREATE TABLE t2 (a int, b varchar(1), INDEX idx (b,a));
INSERT INTO t2 VALUES (5,'r'), (5,'z');
CREATE TABLE t3 (a int, b varchar(1), INDEX idx (b,a));
INSERT INTO t3 VALUES (5,'r'), (5,'z');
set @tmp_otimizer_switch= @@optimizer_switch;
SET SESSION optimizer_switch='semijoin=on,firstmatch=on';
SET SESSION optimizer_switch='loosescan=off';
EXPLAIN
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index idx idx 9 NULL 2 Using where; Using index; Start temporary
1 PRIMARY t3 ref idx idx 4 test.t2.b 1 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where; End temporary; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
a
5
SET SESSION optimizer_switch='loosescan=on';
EXPLAIN
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index idx idx 9 NULL 2 Using where; Using index; Start temporary
1 PRIMARY t3 ref idx idx 4 test.t2.b 1 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where; End temporary; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
a
5
set optimizer_switch= @tmp_otimizer_switch;
DROP TABLE t1,t2,t3;
set optimizer_switch=@subselect_sj_tmp;
set optimizer_switch=@subselect_sj_tmp;
mysql-test/r/subselect_sj_jcl6.result
View file @
76d03e7a
...
@@ -2061,6 +2061,39 @@ a
...
@@ -2061,6 +2061,39 @@ a
3
3
set optimizer_switch= @tmp_otimizer_switch;
set optimizer_switch= @tmp_otimizer_switch;
drop table t1,t2;
drop table t1,t2;
#
# Bug #887496: semijoin with IN equality for the second part of an index
#
CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (9), (0), (8), (5);
CREATE TABLE t2 (a int, b varchar(1), INDEX idx (b,a));
INSERT INTO t2 VALUES (5,'r'), (5,'z');
CREATE TABLE t3 (a int, b varchar(1), INDEX idx (b,a));
INSERT INTO t3 VALUES (5,'r'), (5,'z');
set @tmp_otimizer_switch= @@optimizer_switch;
SET SESSION optimizer_switch='semijoin=on,firstmatch=on';
SET SESSION optimizer_switch='loosescan=off';
EXPLAIN
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index idx idx 9 NULL 2 Using where; Using index; Start temporary
1 PRIMARY t3 ref idx idx 4 test.t2.b 1 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where; End temporary; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
a
5
SET SESSION optimizer_switch='loosescan=on';
EXPLAIN
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index idx idx 9 NULL 2 Using where; Using index; Start temporary
1 PRIMARY t3 ref idx idx 4 test.t2.b 1 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where; End temporary; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE a IN (SELECT t2.a FROM t2,t3 WHERE t2.b = t3.b);
a
5
set optimizer_switch= @tmp_otimizer_switch;
DROP TABLE t1,t2,t3;
set optimizer_switch=@subselect_sj_tmp;
set optimizer_switch=@subselect_sj_tmp;
#
#
# BUG#49129: Wrong result with IN-subquery with join_cache_level=6 and firstmatch=off
# BUG#49129: Wrong result with IN-subquery with join_cache_level=6 and firstmatch=off
...
...
mysql-test/t/subselect_sj.test
View file @
76d03e7a
...
@@ -1880,5 +1880,35 @@ set optimizer_switch= @tmp_otimizer_switch;
...
@@ -1880,5 +1880,35 @@ set optimizer_switch= @tmp_otimizer_switch;
drop
table
t1
,
t2
;
drop
table
t1
,
t2
;
--
echo
#
--
echo
# Bug #887496: semijoin with IN equality for the second part of an index
--
echo
#
CREATE
TABLE
t1
(
a
int
);
INSERT
INTO
t1
VALUES
(
9
),
(
0
),
(
8
),
(
5
);
CREATE
TABLE
t2
(
a
int
,
b
varchar
(
1
),
INDEX
idx
(
b
,
a
));
INSERT
INTO
t2
VALUES
(
5
,
'r'
),
(
5
,
'z'
);
CREATE
TABLE
t3
(
a
int
,
b
varchar
(
1
),
INDEX
idx
(
b
,
a
));
INSERT
INTO
t3
VALUES
(
5
,
'r'
),
(
5
,
'z'
);
set
@
tmp_otimizer_switch
=
@@
optimizer_switch
;
SET
SESSION
optimizer_switch
=
'semijoin=on,firstmatch=on'
;
SET
SESSION
optimizer_switch
=
'loosescan=off'
;
EXPLAIN
SELECT
*
FROM
t1
WHERE
a
IN
(
SELECT
t2
.
a
FROM
t2
,
t3
WHERE
t2
.
b
=
t3
.
b
);
SELECT
*
FROM
t1
WHERE
a
IN
(
SELECT
t2
.
a
FROM
t2
,
t3
WHERE
t2
.
b
=
t3
.
b
);
SET
SESSION
optimizer_switch
=
'loosescan=on'
;
EXPLAIN
SELECT
*
FROM
t1
WHERE
a
IN
(
SELECT
t2
.
a
FROM
t2
,
t3
WHERE
t2
.
b
=
t3
.
b
);
SELECT
*
FROM
t1
WHERE
a
IN
(
SELECT
t2
.
a
FROM
t2
,
t3
WHERE
t2
.
b
=
t3
.
b
);
set
optimizer_switch
=
@
tmp_otimizer_switch
;
DROP
TABLE
t1
,
t2
,
t3
;
# The following command must be the last one the file
# The following command must be the last one the file
set
optimizer_switch
=@
subselect_sj_tmp
;
set
optimizer_switch
=@
subselect_sj_tmp
;
sql/opt_subselect.h
View file @
76d03e7a
...
@@ -170,7 +170,7 @@ public:
...
@@ -170,7 +170,7 @@ public:
PREV_BITS
(
ulonglong
,
s
->
emb_sj_nest
->
sj_in_exprs
)
&&
// (2)
PREV_BITS
(
ulonglong
,
s
->
emb_sj_nest
->
sj_in_exprs
)
&&
// (2)
(
PREV_BITS
(
key_part_map
,
max_loose_keypart
+
1
)
&
// (3)
(
PREV_BITS
(
key_part_map
,
max_loose_keypart
+
1
)
&
// (3)
(
found_part
|
loose_scan_keyparts
))
==
// (3)
(
found_part
|
loose_scan_keyparts
))
==
// (3)
(
found_part
|
loose_scan_keyparts
)
&&
// (3)
PREV_BITS
(
key_part_map
,
max_loose_keypart
+
1
)
&&
// (3)
!
key_uses_partial_cols
(
s
->
table
,
key
))
!
key_uses_partial_cols
(
s
->
table
,
key
))
{
{
/* Ok, can use the strategy */
/* Ok, can use the strategy */
...
...
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