Question

我正在尝试计算两个量（sum1和sum2）并从sum2中减去sum1作为一个名为tqty的列。以下是sum1的计算方法：

SELECT tblStockMaster.SmName                           AS StockMaster,
       SUM(isnull(tblPurchaseOrderD.TotalQuantity, 0)) AS sum1
FROM   tblStockMaster
       LEFT JOIN tblPurchaseOrderD
         ON tblPurchaseOrderD.StockControl = tblStockMaster.SmName
GROUP  BY tblStockMaster.SmName

和结果

itemname                           sum1         
ACTIVE MAPE 1                       0          
DEVELOPMENTAL READING 2             2         
EDUCATIONAL TECHNOLOGY 2            3        
FACILITATING LEARNING 2             1          
GRAMAMAR AND COMPOSITION            3        
HUMANITIES AND DIGITAL ARTS         0        
INTRODUCTIORY MEDICAL PHYSICS FOR   1          
PHILLIPINE HISTORY AND GOVERMENT    0

这里是sum2：

SELECT tblStockMaster.SmName                       AS StockMaster,
       SUM(isNull(tblReceivingD.TotalQuantity, 0)) AS sum2
FROM   tblStockMaster
       LEFT JOIN tblReceivingD
         ON tblReceivingD.StockControlR = tblStockMaster.SmName
GROUP  BY tblStockMaster.SmName

和结果

itemname                                                      sum2    
ACTIVE MAPE 1                                                   0        
DEVELOPMENTAL READING 2                                         0          
EDUCATIONAL TECHNOLOGY 2                                        0 
FACILITATING LEARNING 2                                         0         
GRAMAMAR AND COMPOSITION                                      396 
HUMANITIES AND DIGITAL ARTS                                     0           
INTRODUCTIORY MEDICAL PHYSICS FOR HEALTH                      200 
PHILLIPINE HISTORY AND GOVERMENT WORKBOOK 6th EDIT              0

我希望得到结果：

itemname                                             Sum1       sum2     tqty    
ACTIVE MAPE 1                                         0           0         0 
DEVELOPMENTAL READING 2                               2           0        -2 
EDUCATIONAL TECHNOLOGY 2                              3           0        -3 
FACILITATING LEARNING 2                               1           0        -1 
GRAMAMAR AND COMPOSITION                              3         396       393
HUMANITIES AND DIGITAL ARTS                           0           0         0   
INTRODUCTIORY MEDICAL PHYSICS FOR HEALTH              1         200       199 
PHILLIPINE HISTORY AND GOVERMENT WORKBOOK 6th EDIT    0           0         0

我正在尝试将sum1和sum2结合起来得到如上所述的结果。

Answer 1

WITH PO
     AS (SELECT SUM(TotalQuantity) AS sum1,
                StockControl       AS SmName
         FROM   tblPurchaseOrderD
         GROUP  BY StockControl),
     R
     AS (SELECT SUM(TotalQuantity) AS sum2,
                StockControlR      AS SmName
         FROM   tblReceivingD
         GROUP  BY StockControlR)
SELECT tblStockMaster.SmName             AS StockMaster,
       ISNULL(sum1, 0)                   AS sum1,
       ISNULL(sum2, 0)                   As sum2,
       ISNULL(sum2, 0) - ISNULL(sum1, 0) as tqty
FROM   tblStockMaster
       LEFT JOIN PO
         ON PO.SmName = tblStockMaster.SmName
       LEFT JOIN R
         ON R.SmName = tblStockMaster.SmName

Answer 2

这有用吗？

 select StockMaster, sum1, sum2, sum2-sum1 as tqtyfrom
(SELECT tblStockMaster.SmName                           AS StockMaster,
       SUM(isnull(tblPurchaseOrderD.TotalQuantity, 0)) AS sum1
FROM   tblStockMaster
       LEFT JOIN tblPurchaseOrderD
         ON tblPurchaseOrderD.StockControl = tblStockMaster.SmName
GROUP  BY tblStockMaster.SmName
)A
inner join
(
SELECT tblStockMaster.SmName                       AS StockMaster,
       SUM(isNull(tblReceivingD.TotalQuantity, 0)) AS sum2
FROM   tblStockMaster
       LEFT JOIN tblReceivingD
         ON tblReceivingD.StockControlR = tblStockMaster.SmName
GROUP  BY tblStockMaster.SmName )B
on A.StockMaster = B.StockMaster

根据您的实体彼此之间的关系，inner join可能会更改为Left或Right

Answer 3

Msg 4104，Level 16，State 1，Line 1 无法绑定多部分标识符“tblPurchaseOrderD.TotalQuantity”。

我发布这个错误，当你发布这个感谢发布它帮助这么多希望不能解决这个

WITH PO
     AS (SELECT SUM(tblPurchaseOrderD.TotalQuantity) AS sum1,
                StockControl                         AS SmName
         FROM   tblPurchaseOrderD
         GROUP  BY StockControl),
     R
     AS (SELECT SUM(tblPurchaseOrderD.TotalQuantity) AS sum2,
                StockControlR                        AS SmName
         FROM   tblReceivingD
         GROUP  BY StockControlR)
SELECT tblStockMaster.SmName                       AS StockMaster,
       ISNULL(MAX(sum1), 0)                        AS sum1,
       ISNULL(MAX(sum2), 0)                        As sum2,
       ISNULL(MAX(sum2), 0) - ISNULL(MAX(sum1), 0) as tqty
FROM   tblStockMaster
       LEFT JOIN PO
         ON PO.SmName = tblStockMaster.SmName
       LEFT JOIN R
         ON R.SmName = tblStockMaster.SmName
GROUP  BY tblStockMaster.SmName

我得到错误先生---＆gt;消息4104，等级16，状态1，行1无法绑定多部分标识符“tblPurchaseOrderD.TotalQuantity”。＆lt; ----这一个

抱歉，先生，我想我已经收到了你的帖子！谢谢先生，它帮助了我在你的帖子里得到了它，非常感谢它帮助........

将一个查询中的不同联接与组和总和组合在一起

3 个答案: