插入时触发

Question

如何在插入时创建具有可能性ROUND值的触发器？

这触发不工作:(

CREATE TRIGGER test 
    ON repaymentevents 
    AFTER INSERT 
AS 
BEGIN 
    SELECT round(value, 2) FROM Inserted 
END 

Answer 1

正如@marc_s说，我认为你需要一个INSTEAD OF触发：

CREATE TRIGGER test 
    ON repaymentevents 
    INSTEAD OF INSERT 
AS 
BEGIN 
    INSERT INTO repaymentevents 
    SELECT round(SomeValue, 2) FROM Inserted 
END 

Here is an example.

Answer 2

这是你需要什么？这是空码，很明显，我无法测试，因为我没有你的表，但希望你的想法。

CREATE TRIGGER test 
    ON repaymentevents 
    AFTER INSERT 
AS 
BEGIN 
    UPDATE repaymentevents 
    INNER 
     JOIN INSERTED I 
     ON I.id = repaymentevents.id 
     SET value = round(i.value, 2) 
END