Question

我正在尝试将select查询的结果移动到recamt行，其中lastrecdate是最大日期，但是我在下面的表格中使用更新查询时给我一个错误。我试图将cardno记录与此子查询链接起来。

子查询：

SELECT cardno
FROM Tbl_Emi e2
WHERE LastRecDate = CAST(GETDATE() AS DATE) AND e2.CardNo = e.CardNo

UPDATE Tbl_Emi
SET  RecAmt =
(
    SELECT
    (
        SELECT extraamt
        FROM Tbl_Emi e1
        WHERE LastRecDate = (SELECT MIN(lastrecdate) FROM Tbl_Emi)
            AND e1.CardNo=e.CardNo
    ) 
    +
    (
        SELECT pendamt+trnammt
        FROM Tbl_Emi e2
        WHERE LastRecDate = CAST(GETDATE() AS DATE) AND e2.CardNo = e.CardNo
    )
    FROM Tbl_Emi e WHERE e.lastrecdate = CAST(GETDATE() AS DATE)
)
WHERE tbl_emi.lastrecdate = CAST(GETDATE() AS DATE)




        Cardno      |     EMI     |   Recamt   |      Trndt     |   Sts   |   PendAmt   |   Trnamt   |    Extra    

 5140560000001183   |   1016.00   |    0.00    |   2014-05-23   |    R    |   0.00      |    1017    |     13

 5140560000001191   |   880.00    |    0.00    |   2014-05-23   |    R    |   0.00      |    880     |     0

 5140560000001142   |   934.00    |    0.00    |   2014-05-23   |    P    |   0.00      |    500     |     0

 5140560000001209   |   963.00    |    0.00    |   2014-05-23   |    P    |   0.00      |    600     |     0

 5140560000001175   |   1024.00   |    0.00    |   2014-05-23   |    N    |   0.00      |    0       |     0

 5140560000001167   |   1117.00   |    0.00    |   2014-05-23   |    N    |   0.00      |    0       |     0

 5140560000001159   |   834.00    |    0.00    |   2014-05-23   |    N    |   0.00      |    0       |     0

 5140560000001183   |   1016.00   |    0.00    |   2014-05-25   |    N    |   30.00     |    1017    |     0

 5140560000001191   |   880.00    |    0.00    |   2014-05-25   |    N    |   0.00      |    880     |     0

 5140560000001142   |   934.00    |    0.00    |   2014-05-25   |    N    |   0.00      |    500     |     0

 5140560000001209   |   963.00    |    0.00    |   2014-05-25   |    N    |   0.00      |    600     |     0

 5140560000001175   |   1024.00   |    0.00    |   2014-05-25   |    N    |   0.00      |    0       |     0

 5140560000001167   |   1117.00   |    0.00    |   2014-05-25   |    N    |   0.00      |    0       |     0

 5140560000001159   |   834.00    |    0.00    |   2014-05-25   |    N    |   0.00      |    0       |     0

Answer 1

首先，您应该告诉您获得的错误以及您正在使用的SQL Server。从你的代码我猜你使用MSSQL。

但是，您的查询引用了“lastrecdate”列，该列不在您的表中，因此无论如何代码都无法处理该示例数据。

更新：在我提出的解决方案之后的评论之后。不幸的是，我仍然不太清楚预期的解决方案，而且列名不匹配的事实也令人困惑。

UPDATE upd SET Recamt=calc.recamt_total --update each row ith calculated values
FROM Tbl_Emi upd -- Join the calculated update value per CardNo to each row
JOIN (
        SELECT te.CardNo,textra.extraamt+te.pentamt+te.trnamt recamt_total --join values from today
        FROM Tbl_Emi te
            JOIN  (SELECT t1.CardNo, t1.extraamt --extraamt value at min_dat
                   FROM Tbl_Emi t1 
                       JOIN (SELECT t2.CardNo,MIN(t2.Trndt) as min_dat --min_dat for each CardNo
                             FROM Tbl_Emi t2
                             GROUP BY t2.CardNo) mindat ON mindat.CardNo=t1.CardNo AND mindat.min_dat=t1.Trndat
                  ) textra ON textra.CardNo=te.CardNo
        WHERE te.Trndat=(CAST(GETDATE() AS DATE))
    ) calc ON upd.CardNo=calc.CardNo

使用选择查询更新行

1 个答案: