通过加入和GROUP BY UPDATE语句(Update Statement using Join

我已经写了下面的更新语句，但它显示的错误，如“附近关键字‘组’语法不正确。”

UPDATE 
       J
SET 
       J.StatusID = CASE WHEN SUM(DUV.VendorDUQuantity) = SUM(RD.InvoiceQuantity) THEN 1 ELSE J.StatusID END
FROM
        PLN_DU_Vendor DUV
    INNER JOIN ENG_Release R ON R.ReleaseID = DUV.ReleaseID
    INNER JOIN ENG_DU_Header H ON H.ReleaseID = R.ReleaseID AND DUV.DUID = H.DUID
    INNER JOIN MKT_JobOrder J ON J.JobOrderID = R.JobOrderID
    INNER JOIN MKT_CustomerOrder CO ON CO.OrderID = J.OrderID
    LEFT JOIN PMT_RFDHeader RH ON RH.JobOrderID = J.JobOrderID
    LEFT JOIN PMT_RFDDetail RD ON RD.RFDID = RH.RFDID AND RD.DUID = DUV.DUID                 
WHERE 
        CO.OrderID = 100
GROUP BY 
        J.JobOrderID

取而代之的更新，选择是为上面的查询可以正常使用。 会是什么问题，以及如何根据加入和GROUP BY子句编写查询。

Answer 1:

您可以尝试通过里面的子查询把组，然后由“JobOrderID”加入，就像这样：

UPDATE J
SET J.StatusID = A.statusId
FROM MKT_JobOrder J
INNER JOIN (
    SELECT J.JobOrderID
        , CASE 
            WHEN SUM(DUV.VendorDUQuantity) = SUM(RD.InvoiceQuantity)
                THEN 1
            ELSE J.StatusID
            END AS statusId 
    FROM PLN_DU_Vendor DUV
    INNER JOIN ENG_Release R ON R.ReleaseID = DUV.ReleaseID
    INNER JOIN ENG_DU_Header H ON H.ReleaseID = R.ReleaseID
                               AND DUV.DUID = H.DUID
    INNER JOIN MKT_JobOrder J ON J.JobOrderID = R.JobOrderID
    INNER JOIN MKT_CustomerOrder CO ON CO.OrderID = J.OrderID
    LEFT JOIN PMT_RFDHeader RH ON RH.JobOrderID = J.JobOrderID
    LEFT JOIN PMT_RFDDetail RD ON RD.RFDID = RH.RFDID
                               AND RD.DUID = DUV.DUID
    WHERE CO.OrderID = 100
    GROUP BY J.JobOrderID
           , J.StatusID
    ) A ON J.JobOrderID = A.JobOrderID

Answer 2:

用户子查询，而不是执行此操作

UPDATE 
   J
 SET StatusID = x.Status
   FROM 
   (select CASE WHEN SUM(DUV.VendorDUQuantity) = SUM(RD.InvoiceQuantity) THEN 1 
    ELSE   J.StatusID END as Status 
     JobOrderID
     FROM
    PLN_DU_Vendor DUV
    INNER JOIN ENG_Release R ON R.ReleaseID = DUV.ReleaseID
    INNER JOIN ENG_DU_Header H ON H.ReleaseID = R.ReleaseID AND DUV.DUID = H.DUID
INNER JOIN MKT_JobOrder J ON J.JobOrderID = R.JobOrderID
INNER JOIN MKT_CustomerOrder CO ON CO.OrderID = J.OrderID
LEFT JOIN PMT_RFDHeader RH ON RH.JobOrderID = J.JobOrderID
LEFT JOIN PMT_RFDDetail RD ON RD.RFDID = RH.RFDID AND RD.DUID = DUV.DUID                 
WHERE 
    CO.OrderID = 100
 GROUP BY 
    J.JobOrderID) X
 INNER JOIN MKT_JobOrder J On x.JobOrderID = J.JobOrderID

文章来源: Update Statement using Join and Group By