sql server触发器的例子。
sql代码：
复制代码 代码示例:
--触发器实例
--判断是插入、删除还是修改数据
--by www.jb200.com
create TRIGGER [updatetest] ON [dbo].[TEST]
FOR INSERT, UPDATE, DELETE
AS
begin
DECLARE
@IsInsert bit,
@IsUpdate bit,
@IsDelete bit
IF EXISTS(SELECT 1 FROM inserted) AND NOT EXISTS(SELECT 1 FROM deleted)
SET @IsInsert = 1
ELSE
SET @IsInsert = 0
IF EXISTS(SELECT 1 FROM inserted) AND EXISTS(SELECT 1 FROM deleted)
SET @IsUpdate = 1
ELSE
SET @IsUpdate = 0
IF NOT EXISTS(SELECT 1 FROM inserted) AND EXISTS(SELECT 1 FROM deleted)
SET @IsDelete = 1
ELSE
SET @IsDelete = 0
if (@IsUpdate=1)
PRINT 'updated '
if (@IsInsert=1)
PRINT 'insert '
if (@IsDelete=1)
PRINT 'delete '
EDN
说明：
inserted、deleted:
这是两个虚拟表，inserted 保存的是 insert 或 update 之后所影响的记录形成的表，deleted 保存的是 delete 或 update 之前所影响的记录形成的表。
