diff options
Diffstat (limited to 'mysql-test/r/table_elim.result')
| -rw-r--r-- | mysql-test/r/table_elim.result | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/mysql-test/r/table_elim.result b/mysql-test/r/table_elim.result index 6da1e716efa..16799e65a00 100644 --- a/mysql-test/r/table_elim.result +++ b/mysql-test/r/table_elim.result @@ -26,17 +26,17 @@ a explain select * from t1 left join t2 on t2.a=t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where # This will not be eliminated as t2.b is in in order list: explain select t1.a from t1 left join t2 on t2.a=t1.a order by t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where # This will not be eliminated as t2.b is in group list: explain select t1.a from t1 left join t2 on t2.a=t1.a group by t2.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where # This will not be eliminated as t2.b is in the WHERE explain select t1.a from t1 left join t2 on t2.a=t1.a where t2.b < 3 or t2.b is null; id select_type table type possible_keys key key_len ref rows Extra @@ -75,7 +75,7 @@ This must not use elimination: explain select count(1) from t1 left join t2 on t2.a=t1.a group by t2.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using index drop table t0, t1, t2, t3; create table t0 ( id integer, primary key (id)); create table t1 ( @@ -128,7 +128,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3 This should use facts and a1 tables: explain extended select id from v1 where attr1 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Using MRR +1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Using where; Using MRR 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index Warnings: Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #1 @@ -156,7 +156,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3 This should use facts and a1 tables: explain extended select id from v2 where attr1 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Using MRR +1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition; Using where; Using MRR 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index Warnings: Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #1 @@ -164,7 +164,7 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` whe This should use facts, a2 and its subquery: explain extended select id from v2 where attr2 between 12 and 14; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using MRR +1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using where; Using MRR 1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using where; Using index 3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.f.id 2 100.00 Using index Warnings: @@ -217,7 +217,7 @@ explain select t1.*, t2.* from t1 left join (t2 left join t3 on t3.pk=t2.col) on t2.pk=t1.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 Using where explain select t1.* from t1 left join ( t2 left join t3 on t3.pk=t2.col or t3.pk=t2.col) @@ -232,7 +232,7 @@ t1 left join on t2.pk=t1.col or t2.pk=t1.col; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 -1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 +1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.col 1 Using where drop table t1, t2, t3; # # Check things that look like functional dependencies but really are not |