stop slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
start slave;
select master_pos_wait('master-bin.999999',0,2);
master_pos_wait('master-bin.999999',0,2)
-1
explain extended select master_pos_wait('master-bin.999999',0,2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1003	select master_pos_wait('master-bin.999999',0,2) AS `master_pos_wait('master-bin.999999',0,2)`
select master_pos_wait('master-bin.999999',0);
stop slave sql_thread;
master_pos_wait('master-bin.999999',0)
NULL
"*** must be empty ***"
show slave status;
"*** must be NULL ***"
select master_pos_wait('foo', 98);
master_pos_wait('foo', 98)
NULL