A QA engineer enters a bar

The first customer walks into the bar and asks where the restrooms are; the entire bar explodes.

He doesn't order a sfdeljknesv??? :-D

On the order Ipad he types:

SELECT concat('DROP TABLE IF EXISTS `', table_name, '`;')
FROM information_schema.tables
WHERE table_schema = 'MyDatabaseName';

A QA Engineer walks into a bar.
He asks for a beer.
Half of the bar collapses.