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mysql-test/r/compare.result
View file @ daf52954
...@@ -88,7 +88,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -88,7 +88,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
Warnings: Warnings:
Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1
Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`a` AS `a`,(select count(0) from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t2`.`a`) and (concat(`test`.`t1`.`b`,`test`.`t1`.`c`) = concat('0',`test`.`t2`.`a`,'01')))) AS `x` from `test`.`t2` order by `test`.`t2`.`a` Note 1003 select `test`.`t2`.`a` AS `a`,<expr_cache><`test`.`t2`.`a`>((select count(0) from `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t2`.`a`) and (concat(`test`.`t1`.`b`,`test`.`t1`.`c`) = concat('0',`test`.`t2`.`a`,'01'))))) AS `x` from `test`.`t2` order by `test`.`t2`.`a`
DROP TABLE t1,t2; DROP TABLE t1,t2;
CREATE TABLE t1 (a TIMESTAMP); CREATE TABLE t1 (a TIMESTAMP);
INSERT INTO t1 VALUES (NOW()),(NOW()),(NOW()); INSERT INTO t1 VALUES (NOW()),(NOW()),(NOW());
......
mysql-test/r/derived_view.result
View file @ daf52954
...@@ -785,7 +785,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -785,7 +785,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
3 DERIVED t1 ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort 3 DERIVED t1 ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort
Warnings: Warnings:
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <in_optimizer>(`test`.`t3`.`a`,<exists>(select `v1`.`a` from `test`.`v1` join `test`.`t2` where ((`test`.`t2`.`a` = `v1`.`b`) and (<cache>(`test`.`t3`.`a`) = `v1`.`a`)))) Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <expr_cache><`test`.`t3`.`a`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(select `v1`.`a` from `test`.`v1` join `test`.`t2` where ((`test`.`t2`.`a` = `v1`.`b`) and (<cache>(`test`.`t3`.`a`) = `v1`.`a`)))))
SELECT * FROM t3 SELECT * FROM t3
WHERE t3.a IN (SELECT v1.a FROM v1, t2 WHERE t2.a = v1.b); WHERE t3.a IN (SELECT v1.a FROM v1, t2 WHERE t2.a = v1.b);
a a
...@@ -992,7 +992,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -992,7 +992,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where 1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
3 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 3 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00
Warnings: Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <in_optimizer>(0,<exists>(select 0 from `test`.`t1` where (<cache>(0) = 0))) Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <expr_cache><0>(<in_optimizer>(0,<exists>(select 0 from `test`.`t1` where (<cache>(0) = 0))))
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0 SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1); WHERE t.a IN (SELECT b FROM t1);
a a b a a b
...@@ -1005,7 +1005,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1005,7 +1005,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where 1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00 2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00
Warnings: Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <in_optimizer>(0,<exists>(select 0 from `test`.`t1` where (<cache>(0) = 0))) Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <expr_cache><0>(<in_optimizer>(0,<exists>(select 0 from `test`.`t1` where (<cache>(0) = 0))))
DROP VIEW v1; DROP VIEW v1;
DROP TABLE t1,t2; DROP TABLE t1,t2;
# #
...@@ -1079,7 +1079,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1079,7 +1079,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings: Warnings:
Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t1` `t` join `test`.`t2` left join `test`.`t3` on((0 <> 0)) where (not(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5))))))) Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t1` `t` join `test`.`t2` left join `test`.`t3` on((0 <> 0)) where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5))))))))
SELECT t.a,t.b FROM t3 RIGHT JOIN ((SELECT * FROM t1) AS t, t2) ON t2.b != 0 SELECT t.a,t.b FROM t3 RIGHT JOIN ((SELECT * FROM t1) AS t, t2) ON t2.b != 0
WHERE (t.a,t.b) NOT IN (SELECT 7, 5); WHERE (t.a,t.b) NOT IN (SELECT 7, 5);
a b a b
...@@ -1093,7 +1093,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1093,7 +1093,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used 3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings: Warnings:
Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on((0 <> 0)) where (not(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5))))))) Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on((0 <> 0)) where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5))))))))
SELECT t.a,t.b FROM t3 RIGHT JOIN (v1 AS t, t2) ON t2.b != 0 SELECT t.a,t.b FROM t3 RIGHT JOIN (v1 AS t, t2) ON t2.b != 0
WHERE (t.a,t.b) NOT IN (SELECT 7, 5); WHERE (t.a,t.b) NOT IN (SELECT 7, 5);
a b a b
...@@ -1107,7 +1107,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1107,7 +1107,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings: Warnings:
Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on((0 <> 0)) where (not(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5))))))) Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on((0 <> 0)) where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5))))))))
DROP VIEW v1; DROP VIEW v1;
DROP TABLE t1,t2,t3; DROP TABLE t1,t2,t3;
# #
...@@ -1266,7 +1266,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1266,7 +1266,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where 3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 't.a' of SELECT #3 was resolved in SELECT #1 Note 1276 Field or reference 't.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where exists(select 28 from `test`.`t2` left join `test`.`t3` on((`test`.`t3`.`a` = 28)) where ('j' < `test`.`t1`.`a`)) Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(exists(select 28 from `test`.`t2` left join `test`.`t3` on((`test`.`t3`.`a` = 28)) where ('j' < `test`.`t1`.`a`)))
SELECT * FROM (SELECT * FROM t1) AS t SELECT * FROM (SELECT * FROM t1) AS t
WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a) WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a)
WHERE t2.b < t.a); WHERE t2.b < t.a);
......
mysql-test/r/explain.result
View file @ daf52954
...@@ -228,7 +228,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -228,7 +228,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note 1003 select (select 1 from `test`.`t2` where (`test`.`t2`.`d` = NULL)) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` Note 1003 select <expr_cache><NULL>((select 1 from `test`.`t2` where (`test`.`t2`.`d` = NULL))) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1`
DROP TABLE t1, t2; DROP TABLE t1, t2;
# #
# Bug #48419: another explain crash.. # Bug #48419: another explain crash..
......
mysql-test/r/group_by.result
View file @ daf52954
...@@ -1742,7 +1742,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1742,7 +1742,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select (select `test`.`t1`.`a`) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by ((select `test`.`t1`.`a`) + 0) Note 1003 select <expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by (<expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)) + 0)
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY -aa; SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY -aa;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
...@@ -1750,7 +1750,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1750,7 +1750,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select (select `test`.`t1`.`a`) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by -((select `test`.`t1`.`a`)) Note 1003 select <expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by -(<expr_cache><`test`.`t1`.`a`>((select `test`.`t1`.`a`)))
# should return only one record # should return only one record
SELECT (SELECT tt.a FROM t1 tt LIMIT 1) aa, COUNT(DISTINCT b) FROM t1 SELECT (SELECT tt.a FROM t1 tt LIMIT 1) aa, COUNT(DISTINCT b) FROM t1
GROUP BY aa; GROUP BY aa;
......
mysql-test/r/join_outer.result
View file @ daf52954
...@@ -1438,7 +1438,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1438,7 +1438,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using where; Using index 2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using where; Using index
Warnings: Warnings:
Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`pk` AS `pk`,(select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk` Note 1003 select `test`.`t2`.`pk` AS `pk`,<expr_cache><`test`.`t2`.`pk`>((select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1)) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk`
select t2.pk, select t2.pk,
(select t3.pk+if(isnull(t4.pk),0,t4.pk) (select t3.pk+if(isnull(t4.pk),0,t4.pk)
from t3 left join t4 on t4.pk=t3.pk from t3 left join t4 on t4.pk=t3.pk
......
mysql-test/r/join_outer_jcl6.result
View file @ daf52954
...@@ -1447,7 +1447,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -1447,7 +1447,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using where; Using index 2 DEPENDENT SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 test.t3.pk 1 100.00 Using where; Using index
Warnings: Warnings:
Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.pk' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`pk` AS `pk`,(select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk` Note 1003 select `test`.`t2`.`pk` AS `pk`,<expr_cache><`test`.`t2`.`pk`>((select (`test`.`t3`.`pk` + if(isnull(`test`.`t4`.`pk`),0,`test`.`t4`.`pk`)) from `test`.`t3` left join `test`.`t4` on((`test`.`t4`.`pk` = `test`.`t3`.`pk`)) where (`test`.`t3`.`pk` = (`test`.`t2`.`pk` + 1000)) limit 1)) AS `t` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`pk` = (`test`.`t1`.`pk` + 1000)) and (`test`.`t1`.`pk` > 1000)) group by `test`.`t2`.`pk`
select t2.pk, select t2.pk,
(select t3.pk+if(isnull(t4.pk),0,t4.pk) (select t3.pk+if(isnull(t4.pk),0,t4.pk)
from t3 left join t4 on t4.pk=t3.pk from t3 left join t4 on t4.pk=t3.pk
......
mysql-test/r/optimizer_switch.result
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mysql-test/r/subselect.result
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mysql-test/r/subselect3.result
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mysql-test/r/subselect3_jcl6.result
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mysql-test/r/subselect4.result
View file @ daf52954
...@@ -224,7 +224,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -224,7 +224,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note 1003 select (select 1 from `test`.`t2` where 0) AS `RESULT` from `test`.`t1` Note 1003 select <expr_cache><>((select 1 from `test`.`t2` where 0)) AS `RESULT` from `test`.`t1`
first equivalent variant first equivalent variant
SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c ; SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c ;
RESULT RESULT
...@@ -235,7 +235,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -235,7 +235,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note 1003 select (select 1 from `test`.`t2` where 0) AS `RESULT` from `test`.`t1` group by NULL Note 1003 select <expr_cache><>((select 1 from `test`.`t2` where 0)) AS `RESULT` from `test`.`t1` group by NULL
second equivalent variant second equivalent variant
SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ; SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;
RESULT RESULT
...@@ -246,7 +246,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -246,7 +246,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
Note 1003 select (select 1 from `test`.`t2` where 0) AS `RESULT` from `test`.`t1` group by NULL Note 1003 select <expr_cache><>((select 1 from `test`.`t2` where 0)) AS `RESULT` from `test`.`t1` group by NULL
DROP TABLE t1,t2; DROP TABLE t1,t2;
# #
# BUG#45928 "Differing query results depending on MRR and # BUG#45928 "Differing query results depending on MRR and
......
mysql-test/r/subselect_mat.result
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mysql-test/r/subselect_mat_cost_bugs.result
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...@@ -100,7 +100,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -100,7 +100,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t2 index c3 c3 9 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join) 2 DEPENDENT SUBQUERY t2 index c3 c3 9 NULL 2 100.00 Using where; Using index; Using join buffer (flat, BNL join)
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.pk' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.pk' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`c1`,<exists>(select `test`.`t1a`.`c1` from `test`.`t1b` join `test`.`t2` left join `test`.`t1a` on((2 and (`test`.`t1a`.`c2` = `test`.`t1b`.`pk`))) where ((`test`.`t1`.`pk` <> 0) and (<cache>(`test`.`t1`.`c1`) = `test`.`t1a`.`c1`) and (`test`.`t2`.`c3` = `test`.`t1b`.`c4`)))) Note 1003 select `test`.`t1`.`pk` AS `pk` from `test`.`t1` where <expr_cache><`test`.`t1`.`c1`,`test`.`t1`.`pk`>(<in_optimizer>(`test`.`t1`.`c1`,<exists>(select `test`.`t1a`.`c1` from `test`.`t1b` join `test`.`t2` left join `test`.`t1a` on((2 and (`test`.`t1a`.`c2` = `test`.`t1b`.`pk`))) where ((`test`.`t1`.`pk` <> 0) and (<cache>(`test`.`t1`.`c1`) = `test`.`t1a`.`c1`) and (`test`.`t2`.`c3` = `test`.`t1b`.`c4`)))))
SELECT pk SELECT pk
FROM t1 FROM t1
WHERE c1 IN WHERE c1 IN
......
mysql-test/r/subselect_no_mat.result
View file @ daf52954
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mysql-test/r/subselect_no_opts.result
View file @ daf52954
set @optimizer_switch_for_subselect_test='materialization=off,semijoin=off,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; set @optimizer_switch_for_subselect_test='materialization=off,semijoin=off,subquery_cache=off,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t11,t12;
drop view if exists v2; drop view if exists v2;
set @subselect_tmp=@@optimizer_switch; set @subselect_tmp=@@optimizer_switch;
......
mysql-test/r/subselect_no_semijoin.result
View file @ daf52954
This diff is collapsed.
mysql-test/r/subselect_sj.result
View file @ daf52954
...@@ -761,11 +761,11 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -761,11 +761,11 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where 3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))) Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))))
show warnings; show warnings;
Level Code Message Level Code Message
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))) Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))))
select a from t1 select a from t1
where a in (select c from t2 where d >= some(select e from t3 where b=e)); where a in (select c from t2 where d >= some(select e from t3 where b=e));
a a
......
mysql-test/r/subselect_sj_jcl6.result
View file @ daf52954
...@@ -772,11 +772,11 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -772,11 +772,11 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where 3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))) Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))))
show warnings; show warnings;
Level Code Message Level Code Message
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))) Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(select `test`.`t3`.`e` from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))))))
select a from t1 select a from t1
where a in (select c from t2 where d >= some(select e from t3 where b=e)); where a in (select c from t2 where d >= some(select e from t3 where b=e));
a a
......
mysql-test/r/subselect_sj_mat.result
View file @ daf52954
This diff is collapsed.
mysql-test/r/type_datetime.result
View file @ daf52954
...@@ -518,7 +518,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -518,7 +518,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select 1 AS `id`,'2007-04-25 18:30:22' AS `cur_date` from `test`.`t1` where <in_optimizer>(1,<exists>(select `test`.`x1`.`id` from `test`.`t1` `x1` where 0)) Note 1003 select 1 AS `id`,'2007-04-25 18:30:22' AS `cur_date` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,<exists>(select `test`.`x1`.`id` from `test`.`t1` `x1` where 0)))
select * from t1 select * from t1
where id in (select id from t1 as x1 where (t1.cur_date is null)); where id in (select id from t1 as x1 where (t1.cur_date is null));
id cur_date id cur_date
...@@ -530,7 +530,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -530,7 +530,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings: Warnings:
Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select 1 AS `id`,'2007-04-25' AS `cur_date` from `test`.`t2` where <in_optimizer>(1,<exists>(select `test`.`x1`.`id` from `test`.`t2` `x1` where 0)) Note 1003 select 1 AS `id`,'2007-04-25' AS `cur_date` from `test`.`t2` where <expr_cache><1>(<in_optimizer>(1,<exists>(select `test`.`x1`.`id` from `test`.`t2` `x1` where 0)))
select * from t2 select * from t2
where id in (select id from t2 as x1 where (t2.cur_date is null)); where id in (select id from t2 as x1 where (t2.cur_date is null));
id cur_date id cur_date
...@@ -544,7 +544,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -544,7 +544,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`cur_date` AS `cur_date` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`id`,<exists>(select `test`.`x1`.`id` from `test`.`t1` `x1` where ((`test`.`t1`.`cur_date` = 0) and (<cache>(`test`.`t1`.`id`) = `test`.`x1`.`id`)))) Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`cur_date` AS `cur_date` from `test`.`t1` where <expr_cache><`test`.`t1`.`id`,`test`.`t1`.`cur_date`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(select `test`.`x1`.`id` from `test`.`t1` `x1` where ((`test`.`t1`.`cur_date` = 0) and (<cache>(`test`.`t1`.`id`) = `test`.`x1`.`id`)))))
select * from t1 select * from t1
where id in (select id from t1 as x1 where (t1.cur_date is null)); where id in (select id from t1 as x1 where (t1.cur_date is null));
id cur_date id cur_date
...@@ -556,7 +556,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -556,7 +556,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`id` AS `id`,`test`.`t2`.`cur_date` AS `cur_date` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`id`,<exists>(select `test`.`x1`.`id` from `test`.`t2` `x1` where ((`test`.`t2`.`cur_date` = 0) and (<cache>(`test`.`t2`.`id`) = `test`.`x1`.`id`)))) Note 1003 select `test`.`t2`.`id` AS `id`,`test`.`t2`.`cur_date` AS `cur_date` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`,`test`.`t2`.`cur_date`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select `test`.`x1`.`id` from `test`.`t2` `x1` where ((`test`.`t2`.`cur_date` = 0) and (<cache>(`test`.`t2`.`id`) = `test`.`x1`.`id`)))))
select * from t2 select * from t2
where id in (select id from t2 as x1 where (t2.cur_date is null)); where id in (select id from t2 as x1 where (t2.cur_date is null));
id cur_date id cur_date
......
mysql-test/r/view.result
View file @ daf52954
...@@ -4329,7 +4329,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -4329,7 +4329,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a`,10 AS `a` from `test`.`t1` join `test`.`t2` where (not(<in_optimizer>(10,<exists>(select NULL from `test`.`t4` left join `test`.`t3` on(multiple equal(NULL, `test`.`t4`.`a`)) where ((`test`.`t4`.`a` >= `test`.`t1`.`a`) and trigcond(((<cache>(10) = NULL) or isnull(NULL)))) having trigcond(<is_not_null_test>(NULL)))))) Note 1003 select `test`.`t1`.`a` AS `a`,10 AS `a` from `test`.`t1` join `test`.`t2` where (not(<expr_cache><10,`test`.`t1`.`a`>(<in_optimizer>(10,<exists>(select NULL from `test`.`t4` left join `test`.`t3` on(multiple equal(NULL, `test`.`t4`.`a`)) where ((`test`.`t4`.`a` >= `test`.`t1`.`a`) and trigcond(((<cache>(10) = NULL) or isnull(NULL)))) having trigcond(<is_not_null_test>(NULL)))))))
SELECT * FROM t1, t2 SELECT * FROM t1, t2
WHERE t2.a NOT IN (SELECT t3.b FROM t3 RIGHT JOIN t4 ON (t4.a = t3.a) WHERE t2.a NOT IN (SELECT t3.b FROM t3 RIGHT JOIN t4 ON (t4.a = t3.a)
WHERE t4.a >= t1.a); WHERE t4.a >= t1.a);
...@@ -4345,7 +4345,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra ...@@ -4345,7 +4345,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 2 100.00 Using where 2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings: Warnings:
Note 1276 Field or reference 'v1.a' of SELECT #2 was resolved in SELECT #1 Note 1276 Field or reference 'v1.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`a` AS `a`,10 AS `a` from `test`.`t1` join `test`.`t2` where (not(<in_optimizer>(10,<exists>(select NULL from `test`.`t4` left join `test`.`t3` on(multiple equal(NULL, `test`.`t4`.`a`)) where ((`test`.`t4`.`a` >= `test`.`t1`.`a`) and trigcond(((<cache>(10) = NULL) or isnull(NULL)))) having trigcond(<is_not_null_test>(NULL)))))) Note 1003 select `test`.`t1`.`a` AS `a`,10 AS `a` from `test`.`t1` join `test`.`t2` where (not(<expr_cache><10,`test`.`t1`.`a`>(<in_optimizer>(10,<exists>(select NULL from `test`.`t4` left join `test`.`t3` on(multiple equal(NULL, `test`.`t4`.`a`)) where ((`test`.`t4`.`a` >= `test`.`t1`.`a`) and trigcond(((<cache>(10) = NULL) or isnull(NULL)))) having trigcond(<is_not_null_test>(NULL)))))))
SELECT * FROM v1, t2 SELECT * FROM v1, t2
WHERE t2.a NOT IN (SELECT t3.b FROM t3 RIGHT JOIN t4 ON (t4.a = t3.a) WHERE t2.a NOT IN (SELECT t3.b FROM t3 RIGHT JOIN t4 ON (t4.a = t3.a)
WHERE t4.a >= v1.a); WHERE t4.a >= v1.a);
......
mysql-test/suite/pbxt/r/subselect.result
View file @ daf52954
This diff is collapsed.
mysql-test/t/subselect_no_opts.test
View file @ daf52954
...@@ -3,7 +3,7 @@ ...@@ -3,7 +3,7 @@
# (test in-to-exists) # (test in-to-exists)
set @optimizer_switch_for_subselect_test='materialization=off,semijoin=off,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on'; set @optimizer_switch_for_subselect_test='materialization=off,semijoin=off,subquery_cache=off,mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
--source t/subselect.test --source t/subselect.test
set @optimizer_switch_for_subselect_test=null; set @optimizer_switch_for_subselect_test=null;
......
mysql-test/t/subselect_scache.test → mysql-test/t/subselect_no_scache.test
View file @ daf52954
...@@ -2,7 +2,7 @@ ...@@ -2,7 +2,7 @@
# Run subselect.test without semi-join optimization (test materialize) # Run subselect.test without semi-join optimization (test materialize)
# #
select @@optimizer_switch like '%subquery_cache=on%'; select @@optimizer_switch like '%subquery_cache=on%';
set optimizer_switch='subquery_cache=on'; set optimizer_switch='subquery_cache=off';
--source t/subselect.test --source t/subselect.test
......
sql/mysql_priv.h
View file @ daf52954
...@@ -608,7 +608,8 @@ enabled by default, add OPTIMIZER_SWITCH_MATERIALIZATION ...@@ -608,7 +608,8 @@ enabled by default, add OPTIMIZER_SWITCH_MATERIALIZATION
OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\ OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\
OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL | \ OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL | \
OPTIMIZER_SWITCH_JOIN_CACHE_HASHED | \ OPTIMIZER_SWITCH_JOIN_CACHE_HASHED | \
OPTIMIZER_SWITCH_JOIN_CACHE_BKA) OPTIMIZER_SWITCH_JOIN_CACHE_BKA | \
OPTIMIZER_SWITCH_SUBQUERY_CACHE)
/* /*
Replication uses 8 bytes to store SQL_MODE in the binary log. The day you Replication uses 8 bytes to store SQL_MODE in the binary log. The day you
......
sql/mysqld.cc
View file @ daf52954
...@@ -491,7 +491,7 @@ static const char *optimizer_switch_str="index_merge=on,index_merge_union=on," ...@@ -491,7 +491,7 @@ static const char *optimizer_switch_str="index_merge=on,index_merge_union=on,"
"semijoin=off," "semijoin=off,"
"partial_match_rowid_merge=on," "partial_match_rowid_merge=on,"
"partial_match_table_scan=on," "partial_match_table_scan=on,"
"subquery_cache=off," "subquery_cache=on,"
"mrr=off," "mrr=off,"
"mrr_cost_based=off," "mrr_cost_based=off,"
"mrr_sort_keys=off," "mrr_sort_keys=off,"
......
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