Question

我想基于两个日期更新我的查询表，我尝试了以下代码，但它不起作用

UPDATE [Stock Report] INNER JOIN Report ON [Stock Report].ItemID = Report.ItemID SET [Stock Report].Amount = SUM(Report.Amount) WHERE [Date Product Was Made] BETWEEN @AA AND @BB

我的两个查询表是报告和库存报告

报告表

ItemID|    Item      |Date Product Was Made|Amount|ProductID|Product Name
  10      Flour        11/17/2015            100     54       Saltbread
  11    Bran Flakes    11/17/2015            100     54       Saltbread
  10      Flour        11/17/2015            100     54       Saltbread
  11    Bran Flakes    11/17/2015            100     54       Saltbread

我希望在股票报告表中看到什么

ItemID|  Item      |  Start Date  |  End Date  |Amount
 10      Flour        11/16/2015    11/25/2015   200
 11     Bran Flakes   11/16/2015    11/25/2015   200

日期可以是任意两个随机日期，但表格应根据日期范围之间使用的金额生成总计。 wht]将成为完成此过程的SQL代码

Answer 1

您使用mysql，sql-server和ms-access标记。

但每个案例的答案都不同。

这里是SQLServer解决方案：

WITH SumAmount AS (
SELECT 
        ItemId
        ,SUM(Report.amount) as sum_amount
    FROM
        Report
    GROUP BY
        ItemId
)
UPDATE SR
    SET
        amount = SA.sum_amount
    FROM 
        [Stock Report] SR
        JOIN SumAmount SA ON SR.ItemID = SA.ItemID
    WHERE   
        [Date Product Was Made] BETWEEN @AA AND @BB

提供MS Access查询（我不熟练使用MSACCESS，http://www.fmsinc.com/microsoftaccess/query/snytax/update-query.html）：

UPDATE  [Stock Report] 
        JOIN (
            SELECT 
                    ItemId
                    ,SUM(Report.amount) as sum_amount
                FROM
                    Report
                GROUP BY
                    ItemId
            ) SA ON [Stock Report].ItemID = SA.ItemID
    SET
        [Stock Report].amount = SA.sum_amount
    WHERE   
        [Date Product Was Made] BETWEEN @AA AND @BB

Answer 2

正如EuphoriaGrogi所说，你非常接近。

SELECT ItemID, Item, @AA AS StartDate, @BB AS EndDate, SUM(Amount) AS TotalAmount
FROM (YourReportTableQueryWith@AAAnd@BBParametersHere) AS SubQuery
GROUP BY SubQuery.ItemID,SubQuery.Item

有关GROUP BY的更多信息，请访问：http://www.w3schools.com/sql/sql_groupby.asp

更新SQL查询以基于两个日期更新表

2 个答案: