Digital Workshop

Please I want someone to help me in this
When I use the database query it works fine to connect the mysql on the web but when i want to use the SQL wizard it also works fine when the tick which is before delete/update is not ticked ,but when i tick the update/delete it doesn't work or in other word it doesn't display the table which is in the dbase.

please help
I hope that my language is clear .If not i'm ready to explain it in other words