diff options
Diffstat (limited to 'mysql-test/r/subselect_sj2_jcl6.result')
| -rw-r--r-- | mysql-test/r/subselect_sj2_jcl6.result | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/mysql-test/r/subselect_sj2_jcl6.result b/mysql-test/r/subselect_sj2_jcl6.result index 67215d1715e..1f7a9d4b9a0 100644 --- a/mysql-test/r/subselect_sj2_jcl6.result +++ b/mysql-test/r/subselect_sj2_jcl6.result @@ -1,3 +1,6 @@ +set @save_optimizer_switch_jcl6=@@optimizer_switch; +set @@optimizer_switch='semijoin_with_cache=on'; +set @@optimizer_switch='outer_join_with_cache=on'; set join_cache_level=6; show variables like 'join_cache_level'; Variable_name Value @@ -37,8 +40,8 @@ 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 -2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY t2 ref b b 5 test.t1.a 2 Using join buffer (flat, BKA join) +2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where select * from t2 where b in (select a from t1); a b 1 1 @@ -56,7 +59,7 @@ insert into t3 select a,a, a,a,a from t0; explain select * from t3 where b in (select a from t1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t3 ALL b NULL NULL NULL 10 -1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; FirstMatch(t3); Using join buffer +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; FirstMatch(t3); Using join buffer (flat, BNL join) select * from t3 where b in (select a from t1); a b pk1 pk2 pk3 1 1 1 1 1 @@ -79,8 +82,8 @@ 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 -2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 +1 PRIMARY t3 ref b b 5 test.t0.a 1 Using join buffer (flat, BKA join) +2 SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where set @save_ecp= @@engine_condition_pushdown; set engine_condition_pushdown=0; select * from t3 where b in (select A.a+B.a from t0 A, t0 B where B.a<5); @@ -134,7 +137,7 @@ a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z from t1 ot where a in (select a from t2 it); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 22 -1 PRIMARY ot ALL NULL NULL NULL NULL 32 Using where; Using join buffer +1 PRIMARY ot ALL NULL NULL NULL NULL 32 Using where; Using join buffer (flat, BNL join) 2 SUBQUERY it ALL NULL NULL NULL NULL 22 select a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z @@ -202,7 +205,7 @@ a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z from t1 ot where a in (select a from t2 it); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY subselect2 ALL unique_key NULL NULL NULL 22 -1 PRIMARY ot ALL NULL NULL NULL NULL 52 Using where; Using join buffer +1 PRIMARY ot ALL NULL NULL NULL NULL 52 Using where; Using join buffer (flat, BNL join) 2 SUBQUERY it ALL NULL NULL NULL NULL 22 select a, mid(filler1, 1,10), length(filler1)=length(filler2) as Z @@ -276,8 +279,8 @@ from t0 where a in (select t2.a+t3.a from t1 left join (t2 join t3) on t2.a=t1.a and t3.a=t1.a); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t0 ALL NULL NULL NULL NULL 10 Start temporary -1 PRIMARY t1 index NULL a 5 NULL 10 Using index; Using join buffer -1 PRIMARY t2 ref a a 5 test.t1.a 1 Using index +1 PRIMARY t1 index NULL a 5 NULL 10 Using index; Using join buffer (flat, BNL join) +1 PRIMARY t2 ref a a 5 test.t1.a 1 Using where; Using index 1 PRIMARY t3 ref a a 5 test.t1.a 1 Using where; Using index; End temporary drop table t0, t1,t2,t3; CREATE TABLE t1 ( @@ -315,8 +318,8 @@ 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 -1 PRIMARY t2 eq_ref PRIMARY,Population PRIMARY 3 test.t3.Country 1 Using index condition(BKA); Using where; Using join buffer +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.t3.Country 1 Using index condition(BKA); Using where; Using join buffer (incremental, BKA join) DROP TABLE t1,t2,t3; CREATE TABLE t1 ( Code char(3) NOT NULL DEFAULT '', @@ -429,9 +432,9 @@ explain extended 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 filtered Extra -1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Start temporary -1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using join buffer -1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary; Using join buffer +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) 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`)) @@ -584,7 +587,7 @@ explain select * from t1 left join t2 on (t2.a= t1.a and t2.a in (select pk from t3)); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 -1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) 2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY PRIMARY 4 func 1 Using index drop table t0, t1, t2, t3; create table t1 (a int); @@ -725,11 +728,12 @@ c2 in (select 1 from t3, t2) and c1 in (select convert(c6,char(1)) from t2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where -1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using join buffer -1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer -1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2); Using join buffer +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join) +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2); Using join buffer (incremental, BNL join) drop table t2, t3; set join_cache_level=default; show variables like 'join_cache_level'; Variable_name Value join_cache_level 1 +set @@optimizer_switch=@save_optimizer_switch_jcl6; |