Question

在下面的查询中，我想根据最大版本对产品的特定日期范围之间的BatchReleaseSourceProductDetails的批准数量求和。我试过但我无法得到结果.pls帮助我这样做。

表BatchReleaseSourceProductDetails：

BatchReleaseSourceProductDetailID  |BatchReleaseID |SourceProductID|ApprovedQty|CreatedOn|VersionID
1|10|15|10|21-02-2015|0
1|10|15|15|21-02-2015|1

表2： BatchRelease：

BatchReleaseID|LocationID
10|1

The result should be 15 for date range 21-02-2015 and 21-02-2015

    SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  ( SourceProductID = @i_ProductID
         AND BR.LocationID = @i_LocationID
         AND Cast(BRSD.CreatedOn AS DATE) >= @i_StartDate
         AND Cast(BRSD.CreatedOn AS DATE) <= @i_EndDate
         AND BRSD.VersionID = (SELECT Max(VersionID)
                               FROM   BatchRelease
                               WHERE  SourceProductID = @i_ProductID
                                      AND BR.LocationID = @i_LocationID
                                      AND Cast(BRSD.CreatedOn AS DATE) >= @i_StartDate
                                      AND Cast(BRSD.CreatedOn AS DATE) <= @i_EndDate) )

Answer 1

进行一些故障排除的时间...... 首先运行最简单的查询：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD

取回0以外的东西？如果没有解决问题（在获得所需结果之前，请为每个步骤执行此操作）。完成了吗？好的，继续前进：

 SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
 FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
           ON BR.BatchReleaseID = BRSD.BatchReleaseID

取回0以外的东西？好的，继续前进：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  SourceProductID = 15

取回0以外的东西？好的，继续前进：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  SourceProductID = 15
         AND BR.LocationID = 1

取回0以外的东西？好的，继续前进：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  SourceProductID = 15
         AND BR.LocationID = 1
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'

取回0以外的东西？好的，继续前进：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  SourceProductID = 15
         AND BR.LocationID = 1
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'

取回0以外的东西？好的，继续前进：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  SourceProductID = 15
         AND BR.LocationID = 1
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'
         AND BRSD.VersionID = 1

如果到目前为止一切正常，则问题出在子查询或变量中。以相同的方式对它们进行故障排除。对于子查询，使其变得非常简单，然后逐渐添加WHERE子句，直到您有完整的查询。在那之后，当你在这里时：

SELECT @nSouceProductQuantity = Isnull(Sum(Isnull(ApprovedQuantity, 0.0)), 0.0)
FROM   BatchReleaseSourceProductDetails BRSD
       LEFT OUTER JOIN BatchRelease BR
                    ON BR.BatchReleaseID = BRSD.BatchReleaseID
WHERE  SourceProductID = 15
         AND BR.LocationID = 1
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'
         AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'
         AND BRSD.VersionID = (SELECT Max(VersionID)
                           FROM   BatchRelease
                           WHERE  SourceProductID = 15
                                  AND BR.LocationID = 1
                                  AND Cast(BRSD.CreatedOn AS DATE) >= '21-02-2015'
                                  AND Cast(BRSD.CreatedOn AS DATE) <= '21-02-2015')

开始一次更换一个变量，直到找到问题的根源。

Sum函数在select Query中发出问题

1 个答案: