Question

我有一个事务表，并且有负sum_value和sum_units的行及其相应的行，反向（正确）sum_value和sum_units。我想删除所有这些对。

以下是如上所述的一对示例：

payer_id    order_nubber  sum_units sum_value id_3rd_level  order_date               isCorporate   payment    tk
2003931     30010577        1       54.15       101011      2013-10-25 00:00:00.000        0         Cash   12244   
2003931     1200223605     -1      -54.15       101011      2013-10-25 00:00:00.000        0         Cash   12244

我尝试了这个但是不正确。

WITH CTE AS
(
    SELECT * 
    FROM transactions
    WHERE sum_value < 0
)
DELETE tr
FROM transactions tr
INNER JOIN CTE
ON CTE.payer_id = tr.payer_id
WHERE CTE.sum_value = (-1) * tr.sum_value AND CTE.sum_units = (-1) * tr.sum_units AND 
CTE.order_date = tr.order_date AND CTE.isCorporate = tr.isCorporate AND
CTE.tk = tr.tk

有人可以帮忙吗？

Answer 1

这会查找具有相同绝对值sum_value和sum_units的所有行（可能超过两行）：

--DELETE tr
SELECT *
FROM transactions AS tr
WHERE EXISTS
 ( SELECT * FROM transactions AS tr2
   WHERE tr.payer_id    = tr2.payer_id
     AND tr.sum_value   = -tr2.sum_value 
     AND tr.sum_units   = -tr2.sum_units
     AND tr.order_date  = tr2.order_date 
     AND tr.isCorporate = tr2.isCorporate 
     AND tr.tk          = t2.tk
 )

当然你应该在实际删除之前仔细检查。

如何在SQL中删除相反的行对？

1 个答案: