Question

我做了SELECT的事情＆＃39; VARIABLE＆＃39;，像这样

SELECT  
    SUM(CASE WHEN BA_Idx = 503 THEN BIL_Debit ELSE 0 END) AS 'SUM_DEBIT_503',
    SUM(CASE WHEN BA_Idx = 504 THEN BIL_Debit ELSE 0 END) AS 'SUM_DEBIT_504'
FROM    
    Bill
WHERE   
    (@MEM_Idx = 0 OR MEM_Idx = @MEM_Idx) AND
    (LEFT(BIL_YYMMDD,7) = @BILM_YYMM) AND           
    BIL_IsValid = 'True'

SELECT @BILFC_TotalLaborCost = SUM_DEBIT_503 + SUM_DEBIT_504

我想接近VARIABLE（＆＃39; SUM_DEBIT_503＆＃39;，＆＃39; SUM_DEBIT_504＆＃39; ）来计算@BILFC_TotalLaborCost。

我该如何处理？

Answer 1

在SELECT本身进行作业：

SELECT @BILFC_TotalLaborCost =
    SUM(CASE WHEN BA_Idx = 503 THEN BIL_Debit ELSE 0 END) +
    SUM(CASE WHEN BA_Idx = 504 THEN BIL_Debit ELSE 0 END)
FROM Bill
WHERE
    (@MEM_Idx = 0 OR MEM_Idx = @MEM_Idx)
    AND (LEFT(BIL_YYMMDD, 7) = @BILM_YYMM)
    AND BIL_IsValid = 'True'

Answer 2

您可以在查询中设置变量。这样，如果你需要它们，它们可以在以后使用。

DECLARE @SumDebit503 <SOMETYPE>
DECLARE @SumDebit504 <SOMETYPE>

SELECT @SumDebit503 = SUM(CASE WHEN BA_Idx = 503 THEN BIL_Debit ELSE 0 END),
       @SumDebit504 = SUM(CASE WHEN BA_Idx = 504 THEN BIL_Debit ELSE 0 END)
FROM Bill
WHERE
    (@MEM_Idx = 0 OR MEM_Idx = @MEM_Idx)
    AND (LEFT(BIL_YYMMDD, 7) = @BILM_YYMM)
    AND BIL_IsValid = 'True'

SELECT  @BILFC_TotalLaborCost = @SumDebit503 + @SumDebit504

SQL Server：选择一些东西作为＆＃39; VARIABLE＆＃39;

2 个答案: