Invalid query: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(select(0)from(select(sleep(15)))v) ''' at line 3
Whole query: select count(*) as cnt
                from complaint 
               where ip='(select(0)from(select(sleep(15)))v)/*' (select(0)from(select(sleep(15)))v) ''