IF EXISTS (SELECT * FROM sysobjects WHERE type = 'TR' AND name = 'tg_groups_delete') BEGIN DROP TRIGGER tg_groups_delete END; CREATE TRIGGER tg_groups_delete ON tc_groups FOR DELETE AS BEGIN UPDATE tc_groups SET groupid = NULL WHERE groupid IN (SELECT deleted.id FROM deleted) END IF EXISTS (SELECT * FROM sysobjects WHERE type = 'TR' AND name = 'tg_users_delete') BEGIN DROP TRIGGER tg_users_delete END; CREATE TRIGGER tg_users_delete ON tc_users FOR DELETE AS BEGIN DELETE FROM tc_user_user WHERE manageduserid IN (SELECT deleted.id FROM deleted) END