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#2970 test case for the epic query problem with covering keys refs[t:2970]

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git-svn-id: file:///svn/mysql/tests/mysql-test@24515 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Rich Prohaska 2010-10-12 18:16:31 +00:00
parent 0fda85370c
commit 5060544e6c
2 changed files with 24 additions and 0 deletions
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13
mysql-test/suite/tokudb.bugs/r/2970.result Normal file
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drop table if exists t2970;
Warnings:
Note 1051 Unknown table 't2970'
create table t2970 (a int, b int, c int, d int, key(a), key(a,b)) engine=innodb;
insert into t2970 values (1,1,1,1),(1,2,3,4);
explain select a,count(b),max(b) from t2970 where a > 0 group by a order by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2970 index a,a_2 a_2 10 NULL 2 Using where; Using index
alter table t2970 engine=tokudb;
explain select a,count(b),max(b) from t2970 where a > 0 group by a order by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2970 index a,a_2 a_2 10 NULL 2 Using where; Using index
drop table t2970;

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mysql-test/suite/tokudb.bugs/t/2970.test Normal file
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# test that the query planner chooses a covering index over a non-covering index with the same
# record cost
drop table if exists t2970;
create table t2970 (a int, b int, c int, d int, key(a), key(a,b)) engine=innodb;
insert into t2970 values (1,1,1,1),(1,2,3,4);
explain select a,count(b),max(b) from t2970 where a > 0 group by a order by a;
alter table t2970 engine=tokudb;
explain select a,count(b),max(b) from t2970 where a > 0 group by a order by a;
drop table t2970;