删除行数据如果数量为零

Question

我在表收据中有这样的数据，因为正值是货物的收货金额，而在退货时是负值。

在上图中，Receiver_No 01267A是收到Qty_Received 1的第一个项目。然后在收货号码01268A上有货物退货。我希望这笔交易不会出现。

这是我试过的声明。

 select I2.Receiver_No, 
        I2.Purchase_order, 
        I2.PO_Line, 
        I2.Qty_received
   from (Select Purchase_order, 
                PO_Line 
           from Receipts 
       group by Purchase_order, 
                PO_Line 
         having sum(qty_received) <>'0') I1 inner join 
        Receipts I2 On 
             I1.Purchase_Order = I2.Purchase_Order and 
             I1.PO_Line = I2.PO_Line

但结果并不符合我的要求。 请帮助。

Answer 1

这适用于您提供的非常有限的数据。如果您想提供有关数据外观的更多信息，那么更容易找到更好的解决方案。

如果您的数据包含大量具有相同数量的行，则此解决方案将无效。

SELECT
    r.Receiver_No, r.Purchase_order, r.PO_Line, r.Qty_received
FROM
    receipts r
WHERE 
    NOT EXISTS (SELECT 
        purchase_order 
    FROM 
        receipts s 
    WHERE 
        r.qty_received = -s.qty_received
    )

Answer 2

如果您的要求是获取数量小于1的行而不是负数：

SELECT * FROM Receipts  WHERE  ABS(QtyRecvd) >0 AND ABS(QtyRecvd) < 1

Answer 3

试试这个

   SELECT * FROM Receipts where Qty_received>0 AND Qty_received < 1