ORDER BY子句是在視圖中，內聯函數，派生表，子查詢無效，和公用表表達式

Question

ORDER BY子句是在視圖中，內聯函數無效，派生 表，子查詢和公用表表達式，除非TOP，OFFSET 或FOR XML也被指定。

我在嘗試執行以下查詢時遇到上述錯誤。任何人都可以請看看，並告訴我我在這裏做錯了什麼？

SELECT 
    * 
FROM (
    SELECT 
     Stockmain.VRNOA, 
     item.description as item_description, 
     party.name as party_name, 
     stockmain.vrdate, 
     stockdetail.qty, 
     stockdetail.rate, 
     stockdetail.amount, 
     ROW_NUMBER() OVER (ORDER BY VRDATE) AS RowNum 
    FROM StockMain 
    INNER JOIN StockDetail 
     ON StockMain.stid = StockDetail.stid 
    INNER JOIN party 
     ON party.party_id = stockmain.party_id 
    INNER JOIN item 
     ON item.item_id = stockdetail.item_id 
    WHERE stockmain.etype='purchase' 
    ORDER BY VRDATE DESC 
) AS MyDerivedTable 
WHERE 
    MyDerivedTable.RowNum BETWEEN 1 and 5 

Answer 1

你並不需要使用ORDER BY在內部查詢後WHERE子句，因爲你已經在ROW_NUMBER() OVER (ORDER BY VRDATE DESC)使用它。

SELECT 
    * 
FROM (
    SELECT 
     Stockmain.VRNOA, 
     item.description as item_description, 
     party.name as party_name, 
     stockmain.vrdate, 
     stockdetail.qty, 
     stockdetail.rate, 
     stockdetail.amount, 
     ROW_NUMBER() OVER (ORDER BY VRDATE DESC) AS RowNum --< ORDER BY 
    FROM StockMain 
    INNER JOIN StockDetail 
     ON StockMain.stid = StockDetail.stid 
    INNER JOIN party 
     ON party.party_id = stockmain.party_id 
    INNER JOIN item 
     ON item.item_id = stockdetail.item_id 
    WHERE stockmain.etype='purchase' 
) AS MyDerivedTable 
WHERE 
    MyDerivedTable.RowNum BETWEEN 1 and 5