Question

我有一个而不是触发器来插入，删除和更新我的视图。我在插入两行或更多行时遇到了一些问题。

IF EXISTS(SELECT * FROM inserted) AND NOT EXISTS(SELECT * FROM deleted)
BEGIN
    DECLARE @LastId INT

    INSERT INTO Sales.CreditCard
    SELECT
        i.CardType,
        i.CardNumber,
        i.ExpMonth,
        i.ExpYear,
        GETDATE()
    FROM inserted i

    SELECT @LastId = @@IDENTITY

    INSERT INTO Sales.PersonCreditCard
        (BusinessEntityID,
        CreditCardID,
        ModifiedDate)
    SELECT
        i.BusinessEntityID,
        @LastId,
        GETDATE()
    FROM inserted i
END

SELECT @LastId = @@IDENTITY获取最后一行的ID，但我插入两个或更多。如何更改此脚本以插入两行以上的行？

Answer 1

我认为我解决了我的问题，但我不确定这是一个很好的解决方案。你觉得怎么样？

IF EXISTS(SELECT * FROM inserted) AND NOT EXISTS(SELECT * FROM deleted)
BEGIN
    DECLARE @LastId TABLE (ID INT, Number NVARCHAR(25))

    INSERT INTO Sales.CreditCard
        OUTPUT inserted.CreditCardID, inserted.CardNumber INTO @LastId
    SELECT
        i.CardType,
        i.CardNumber,
        i.ExpMonth,
        i.ExpYear,
        GETDATE()
    FROM inserted i

    INSERT INTO Sales.PersonCreditCard
        (BusinessEntityID,
        CreditCardID,
        ModifiedDate)
    SELECT
        i.BusinessEntityID,
        ID,
        GETDATE()
    FROM inserted i
    INNER JOIN @LastId AS l
        ON l.Number = i.CardNumber
END

Answer 2

尝试使用光标。

Declare @cardtype int,
Declare @cardnumber int ,
Declare @expmonth int,
Declare @expyear int,
Declare @cursor CURSOR

Set @cursor = cursor FAST_FORWARD
for

select i.CardType,i.CardNumber,i.ExpMonth,i.ExpYear,GETDATE()   from        inserted i

Open cursor

FETCH NEXT from @cursor into @cardtype, @cardnumber, @expmonth, @expyear

WHILE @@fetch_status=0
BEGIN
  -- your statement
 FETCH NEXT from  @cursor into @cardtype, @cardnumber, @expmonth,   @expyear

END
close @cursor
deallocate @cursor

在视图中插入两行或更多行

2 个答案: