DML触发器
Insert触发器
CREATE TRIGGER T_addMoney ON dbo.Staff FOR INSERT AS UPDATE dbo.Staff SET Money=Money+1 WHERE ID=(SELECT ID FROM Inserted) --插入一条数据后自动将money+1
Delete触发器
CREATE TRIGGER T_Delete ON dbo.Staff FOR DELETE AS SELECT * FROM Deleted --删除后显示删除的内容
Update触发器
CREATE TRIGGER T_Update ON dbo.Staff FOR UPDATE AS IF (UPDATE(Name) OR UPDATE(Sex)) BEGIN PRINT '基础数据不能更改' ROLLBACK TRANSACTION END ELSE PRINT '数据修改成功'
DDL触发器
CREATE TRIGGER T_notdelete ON DATABASE FOR DROP_TABLE,ALTER_TABLE AS PRINT '事物不能被处理,基础数据表不能被修改和删除' ROLLBACK