Sql 使用基于集合的查询代替游标

需要根据多组科目作为条件运行查询。试图避免游标/while循环场景。@MasterGroup变量是游标迭代器，直接从Group table派生而来，Group table是一对多的变量，其帐户来自Group table，然后在WHERE子句的子查询中使用。最终结果将填充到带有@MasterGroup整数的新表中。有没有办法避免在这里使用游标/循环？非常感谢

Insert Into SAGTranTmp
SELECT 
        @MasterGroup,
        C1.Cust_Type,
        T1.Exclude,
        T1.Acct_No,
        SUM(Tran_Amt) AS [Amount]
FROM dbo.Trans AS [T1]
     JOIN dbo.Customers AS C1 ON T1.Acct_No = C1.Acct_No
WHERE C1.Acct_No IN (
        SELECT AcctNo 
        FROM SignAcc_Group
        WHERE MasterGroup = @MasterGroup)

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我可能过于简化了，如果我这样做了，请道歉，但请尝试一下，希望它能有所帮助

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假设主组为表主组int。 你可以试试这个：

;WITH 
temp AS (SELECT DISTINCT
    mg.MasterGroup,
    T1.Acct_No
 FROM dbo.Trans AS [T1]
       Inner JOIN dbo.Customers AS C1 ON T1.Acct_No = C1.Acct_No
       inner join SignAcc_Group as sg ON C1.Acct_No = sg.AcctNo 
       inner join #MasterGroup mg ON sg.MasterGroup  = mg.MasterGroup        
         )
 Insert Into SAGTranTmp
 SELECT 
    t.MasterGroup,
    C1.Cust_Type,
    T1.Exclude,
    T1.Acct_No,
    SUM(Tran_Amt) AS [Amount]
 FROM temp t 
 INNER JOIN dbo.Trans AS [T1] ON T1.Acct_No = t.Acct_No 
 INNER JOIN dbo.Customers AS C1 ON T1.Acct_No = C1.Acct_No
 GROUP BY t.MasterGroup,
       C1.Cust_Type,
       T1.Exclude,
       T1.Acct_No

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请编辑您的问题以包括示例数据和所需结果谢谢-现在在带有56MM表格的tran表格上运行此功能。单独的实例正在运行游标版本。会让你知道结果。干杯

;WITH 
temp AS (SELECT DISTINCT
    mg.MasterGroup,
    T1.Acct_No
 FROM dbo.Trans AS [T1]
       Inner JOIN dbo.Customers AS C1 ON T1.Acct_No = C1.Acct_No
       inner join SignAcc_Group as sg ON C1.Acct_No = sg.AcctNo 
       inner join #MasterGroup mg ON sg.MasterGroup  = mg.MasterGroup        
         )
 Insert Into SAGTranTmp
 SELECT 
    t.MasterGroup,
    C1.Cust_Type,
    T1.Exclude,
    T1.Acct_No,
    SUM(Tran_Amt) AS [Amount]
 FROM temp t 
 INNER JOIN dbo.Trans AS [T1] ON T1.Acct_No = t.Acct_No 
 INNER JOIN dbo.Customers AS C1 ON T1.Acct_No = C1.Acct_No
 GROUP BY t.MasterGroup,
       C1.Cust_Type,
       T1.Exclude,
       T1.Acct_No