#
# Bug #725050: print keyuse info when  hash join is used 
#
create table t1 (a int, b int);
insert into t1 values (2,2), (1,1);
create table t2 (a int);
insert into t2 values (2), (3);
set session join_cache_level=3;
set @@debug_dbug= 'd,opt';
explain select t1.b from t1,t2 where t1.b=t2.a;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
1	SIMPLE	t2	hash_ALL	NULL	#hash#$hj	5	test.t1.b	2	Using where; Using join buffer (flat, BNLH join)
select t1.b from t1,t2 where t1.b=t2.a;
b
2
set session join_cache_level=default;
drop table t1,t2;