SQL組By子句（無效列）？

我正在構建一些基本的SQL查詢，並且已經在'group By'子句中脫節。我在列標題上使用了別名，但在嘗試按照我的結果分組時，遇到了問題。我此刻的代碼是： -SQL組By子句（無效列）？

SELECT     
    vwREP_GP_ContractProjectPurchaseCostCatID.PACOSTCATID AS COST_CAT_CODE, 
    vwREP_GP_ContractProjectPurchaseCostCatID.PACOSTCATNME AS COST_CAT_NAME, 
    vwREP_GP_ContractProjectPurchaseRpt.COST, 
    vwREP_GP_ContractProjectPurchaseRpt.ITEMDESC AS ITEM, 
    vwREP_GP_ContractProjectPurchaseRpt.CREDITOR, 
    vwREP_GP_ContractProjectPurchaseRpt.DOC_NUM AS DOCUMENT_NUMBER, 
    vwREP_GP_ContractProjectPurchaseRpt.DESCRIPTION, 
    vwREP_GP_ContractProjectPurchaseRpt.DOC_DATE AS DATE, 
    vwREP_GP_ContractProjectPurchaseRpt.PROJECT AS JOB_CODE_STAGE, 
    vwREP_GP_ContractProjectPurchaseRpt.COMPOUNDNAME AS CATEGORY_DESCRIPTION 
FROM   
    vwREP_GP_ContractProjectPurchaseCostCatID 
INNER JOIN 
    vwREP_GP_ContractProjectPurchaseRpt ON wREP_GP_ContractProjectPurchaseCostCatID.PACOSTCATID = vwREP_GP_ContractProjectPurchaseRpt.PACOSTCATID 


SELECT CATEGORY_DESCRIPTION, SUM(COST) AS TotalCost FROM 
    ( 
     SELECT COMPOUNDNAME AS CATEGORY_DESCRIPTION FROM wREP_GP_ContractProjectPurchaseRpt 
    ) A 
GROUP BY CATEGORY_DESCRIPTION

額外的代碼來處理使用別名列名我現在得到一個錯誤，「成本」是一個無效的列已經加入？我沒有改變這個列名？

我知道它明顯地盯着我，但我的大腦並沒有參與，所以如果任何人都可以指出我出錯的地方，或者做一個簡單的方法，這將是一個很大的幫助。

在此先感謝。

來源

2012-05-18 user1086159

使用

SELECT COMPOUNDNAME AS CATEGORY_DESCRIPTION, 
     Sum(COST) AS TotalCost 
FROM vwREP_GP_ContractProjectPurchaseRpt 
GROUP BY COMPOUNDNAME

代替

SELECT CATEGORY_DESCRIPTION,SUM(COST)AS TotalCost FROM 
( 
    SELECT COMPOUNDNAME AS CATEGORY_DESCRIPTION FROM vwREP_GP_ContractProjectPurchaseRpt 
) A 
GROUP BY CATEGORY_DESCRIPTION

你不包括內部查詢的費用列（這是所有正在對SQL Server Management Studio中2005年完成）。

來源

2012-05-18 10:54:42

謝謝你的答案。現在工作正常。 – user1086159

SELECT CATEGORY_DESCRIPTION, SUM(COST) AS TotalCost 
FROM ( 
     SELECT COMPOUNDNAME AS CATEGORY_DESCRIPTION, COST 
     FROM vwREP_GP_ContractProjectPurchaseRpt 
     ) A 
GROUP BY 
     CATEGORY_DESCRIPTION

來源

2012-05-18 10:54:54 Quassnoi

SQL組By子句（無效列）？

回答

相關問題