删除事务时使用触发器更新另一个表中的数据

Question

我有2张桌子：

• tblStock

  （零件编号、库存数量、库存位置）

• tblTransfer

  （零件编号、库存数量、从位置、到位置）

当我删除

tblTransfer

中的数据时，股票会反转回

tblStock

。

插入触发器工作正常，但删除触发器不起作用。

请查看我的删除触发器：

CREATE TRIGGER [dbo].[UpdateStock] 
ON [dbo].[tblTransfer]
FOR DELETE, UPDATE
AS
BEGIN
    SET NOCOUNT ON;

    MERGE tblStock s
    USING (SELECT d.PartNo, d.StockLocation
           FROM Deleted d) MergeData ON s.PartNo = MergeData.PartNo
                                     AND s.StockLocation = MergeData.FromLocation
      WHEN MATCHED THEN
        UPDATE SET
            s.StockQty = s.StockQty - MergeData.StockQty
            s.StockLocation = MergeData.ToLocation
END;

Answer 1

    create trigger trg_test
    on    dbo.tbltransfer
    after delete 
    as
    begin

    update tbl
    set  tbl.stockqnty=d.quantity, tbl.stocklocation=d.location
    from
    tblstock tbl
    join
    deleted d
    on d.partno=tbl.partno

    end