I am trying to use MySQL benchmark to test some queries. But, I am running to an error.
SELECT benchmark (10000, (select title from user));
and in return I get this error;
ERROR 1242 (21000): Subquery returns more than 1 row
Does anyone know how to benchmark a query?
Thanks
select title from user
This returns multiple rows, which won't work.
Refer to this link: http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_benchmark
The expression you pass must return a scalar result.
You need to change the query such that it returns a single row: ex:
select title from user where user_name = 'some_user'