更新时间:2022-12-12 10:50:28
基本上,使用 INSTEAD OF INSERT
触发器,您可以实现您想要的 - 只需从INSERTED
伪表,修改后插入到表中
Basically, with an INSTEAD OF INSERT
trigger, you can achieve what you're looking for - just read out the data from the INSERTED
pseudo table, modify it, and insert it into the table
所以你的触发器看起来像这样:
So your trigger would look something like this:
CREATE TRIGGER YourTrigger ON dbo.YourTable
INSTEAD OF INSERT
AS
SET NOCOUNT ON
-- do the INSERT based on the INSERTED pseudo table, modify data as needed
INSERT INTO dbo.YourTable(Col1, Col2, ....., ColN)
SELECT
Col1, 2 * Col2, ....., N * ColN
FROM
INSERTED
当然,您也可以添加例如以 WHERE
子句的形式检查该 SELECT .... FROM INSERTED
语句到例如忽略某些行 - 可能性无穷无尽!
Of course, you could also add e.g. checks in the form of WHERE
clause to that SELECT .... FROM INSERTED
statement to e.g. ignore certain rows - the possibilities are endless!