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added test for BUG#3759

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2004-08-30 18:14:29 +03:00
parent 2466cbc479
commit 65a94e3470
2 changed files with 35 additions and 0 deletions
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21
mysql-test/r/select.result
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@ -2327,3 +2327,24 @@ select * from t2,t3 where t2.s = t3.s;
s s s s
two two two two
drop table t1, t2, t3; drop table t1, t2, t3;
create table t1 (a integer, b integer, index(a), index(b));
create table t2 (c integer, d integer, index(c), index(d));
insert into t1 values (1,2), (2,2), (3,2), (4,2);
insert into t2 values (1,3), (2,3), (3,4), (4,4);
explain select * from t1 left join t2 on a=c where d in (4);
table type possible_keys key key_len ref rows Extra
t2 ref c,d d 5 const 2 Using where
t1 ALL a NULL NULL NULL 3 Using where
select * from t1 left join t2 on a=c where d in (4);
a b c d
3 2 3 4
4 2 4 4
explain select * from t1 left join t2 on a=c where d = 4;
table type possible_keys key key_len ref rows Extra
t2 ref c,d d 5 const 2 Using where
t1 ALL a NULL NULL NULL 3 Using where
select * from t1 left join t2 on a=c where d = 4;
a b c d
3 2 3 4
4 2 4 4
drop table t1, t2;

14
mysql-test/t/select.test
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@ -1874,3 +1874,17 @@ select * from t3 where s = 'one';
select * from t1,t2 where t1.s = t2.s; select * from t1,t2 where t1.s = t2.s;
select * from t2,t3 where t2.s = t3.s; select * from t2,t3 where t2.s = t3.s;
drop table t1, t2, t3; drop table t1, t2, t3;
#
# Bug #3759
# Both queries should produce identical plans and results.
#
create table t1 (a integer, b integer, index(a), index(b));
create table t2 (c integer, d integer, index(c), index(d));
insert into t1 values (1,2), (2,2), (3,2), (4,2);
insert into t2 values (1,3), (2,3), (3,4), (4,4);
explain select * from t1 left join t2 on a=c where d in (4);
select * from t1 left join t2 on a=c where d in (4);
explain select * from t1 left join t2 on a=c where d = 4;
select * from t1 left join t2 on a=c where d = 4;
drop table t1, t2;