Can you roll back the DDL statement in a trigger? The answer is yes. Since the DDL statement that fires the trigger and the statements defined inside the trigger are all executed as a single statement batch, you can add a ROLLBACK statement in the trigger to rollback the entire batch.

USE GlobalGuideLineDatabase; GO CREATE TRIGGER drop_rollback ON DATABASE AFTER DROP_TABLE AS PRINT 'Drop table is not allowed!'; ROLLBACK; GO DROP TABLE ggl_users; GO Drop table is not allowed! Msg 3609, Level 16, State 2, Line 2 The transaction ended in the trigger. The batch has been aborted.

This trigger is powerful. It will stop you from dropping any tables in GlobalGuideLineDatabase database.