Question

我想只获取一次数据。怎么做？例如，仅来自第一个操作

表

myTABLE1
(
NAME,
SURNAME,
USERNAME, 
USERDATE
)

对MyTABLE1的第一个动作

INSERT INTO MyTABLE1 
SELECT NAME, SURNAME FROM MyTABLE2

对MyTABLE1的第二个动作

CREATE TRIGGER example on MyTABLE1 AFTER INSERT
AS
UPDATE    MyTABLE1
SET       USERNAME = 'sysUser1212' and USERDATE = '2004-09-02 00:00:00.000'

我在MyTable3中受到两行影响，但我想只获得一次

CREATE TRIGGER example2 on MyTABLE1 FOR INSERT UPDATE DELETE
    AS
    INSERT INTO MyTABLE3
    SELECT NAME, SURNAME, USERNAME, USERDATE
    from inserted

Answer 1

创建为INSTEAD OF触发器。

在进行插入时，你可以用'sysUser1212'替换USERNAME，用'2004-09-02 00：00：00.000'替换USERDATE。

CREATE TRIGGER examplex on MyTABLE1 INSTEAD OF INSERT
AS
INSERT    MyTABLE1 (USERNAME, USERDATE, NAME, SURNAME)
SELECT
    'sysUser1212'
    , '2004-09-02 00:00:00.000'
    , NAME
    , SURNAME
FROM inserted   


-- The following disapear
/*
CREATE TRIGGER example on MyTABLE1 AFTER INSERT
AS
UPDATE    MyTABLE1
SET       USERNAME = 'sysUser1212' and USERDATE = '2004-09-02 00:00:00.000'
--*/

TRIGGER显示两行受影响的T-SQL

1 个答案: