插入時觸發

Question

如何在插入時創建具有可能性ROUND值的觸發器？

這觸發不工作:(

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

Answer 1

正如@marc_s說，我認爲你需要一個INSTEAD OF觸發：

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

這是你需要什麼？這是空碼，很明顯，我無法測試，因爲我沒有你的表，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