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

git-svn-id: file:///svn/mysql/tests/mysql-test@24515 c7de825b-a66e-492c-adef-691d508d4ae1

mysql-test/suite/tokudb.bugs/r/2970.result

+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;

mysql-test/suite/tokudb.bugs/t/2970.test

+# 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;
+