Question

我有一个AFTER INSERT触发器，适用于单行插入，但使用插入＆gt;的INSERT SELECT语句表现不佳10,000行/

是否可以在语句级别禁用触发器，例如对于单个INSERT SELECT语句？

Answer 1

DISABLE TRIGGER dbo.MyTrigger ON dbo.MyTable

EXEC MyGeographyStoredProcedure

ENABLE TRIGGER dbo.MyTrigger ON dbo.MyTable

或

DISABLE TRIGGER dbo.MyTrigger ON dbo.MyTable

INSERT LudicrousNumberofRows FROM BigDataset

ENABLE TRIGGER dbo.MyTrigger ON dbo.MyTable

Answer 2

当您禁用触发器时，它适用于所有人，而不仅仅是您的连接。那么为什么要尝试禁用它并导致其他插入的潜在问题？

在触发器的开头做：

IF EXISTS (SELECT top 2 COUNT(1) FROM INSERTED HAVING COUNT(1)>1)
BEGIN
    --possibly insert into some other "work needs to be done table"
    --where you have a running job pull this info and work on it
    --so this trigger doesn't need to do it, you just delay the work
    --and let the job do it.
    RETURN --exit the trigger without doing any of the "slow processing"
END

Answer 3

另一种选择：

ALTER TABLE tablename DISABLE TRIGGER ALL 
-- do work here 
ALTER TABLE tablename ENABLE TRIGGER ALL

如果您只有一个触发器或禁用表上所有触发器的内容，请使用它：）

禁用单个插入语句上的触发器

3 个答案: