with語句SQL，在where子句

Question

我已經得到了未知列下面的查詢被拋出以下錯誤

未知列「ROWNUM」

WITH Employees AS 
(
SELECT 
    (keyTblSp.RANK * 3) AS [Rank], 
    sp.*, 
    addr.Street, 
    addr.PostOfficeBox, 
    addr.StreetNumber 
FROM Employee sp  
    INNER JOIN 
     FREETEXTTABLE(Employee, *, 'something', 1000) AS keyTblSp 
     ON sp.EmployeeId = keyTblSp.[KEY]  
    LEFT OUTER JOIN [Address] addr ON addr.EmployeeId = sp.EmployeeId 
UNION ALL 
SELECT 
    (keyTblAddr.RANK * 2) AS [Rank], 
    sp.*, 
    addr.Street, 
    addr.PostOfficeBox, 
    addr.StreetNumber 
FROM Employee sp  
    LEFT OUTER JOIN [Address] addr ON addr.EmployeeId = sp.EmployeeId 
    INNER JOIN 
     FREETEXTTABLE([Address], *, 'something', 1000) AS keyTblAddr 
     ON addr.AddressId = keyTblAddr.[KEY] 
) 

SELECT ROW_NUMBER() OVER (ORDER BY [Rank] DESC) AS RowNum, * 
FROM Employees 
WHERE RowNum BETWEEN (1 - 1) * 10 + 1 AND 1 * 10 
ORDER BY Rank DESC 

Answer 1

嘗試wrpping您的查詢來獲得在where子句中

SELECT * FROM (SELECT ROW_NUMBER() OVER (ORDER BY [Rank] DESC) AS RowNum , * FROM Employees) AS Results WHERE RowNum BETWEEN (1 - 1) * 10 + 1 AND 1 * 10 ORDER BY Rank

Answer 2

這是因爲別名不是在WHERE條款中確認。相反，使用完整的查詢是這樣的：

WHERE ROW_NUMBER() OVER (ORDER BY [Rank] DESC) BETWEEN (1 - 1) * 10 + 1 AND 1 * 10

Answer 3

如何：

被等級說明選擇前10 * 從員工 爲了

另外，它沒有在那裏ROWNUM工作條款。 （爲什麼你們之間那麼棘手？）。

Answer 4

您的WHERE子句不能引用窗口或聚合函數，如ROW_NUMBER()。如果你想上的ROW_NUMBER()結果進行過濾，你需要的HAVING條款中這樣做：

... 
SELECT ROW_NUMBER() OVER (ORDER BY [Rank] DESC) AS RowNum, * 
FROM Employees 
HAVING RowNum BETWEEN (1 - 1) * 10 + 1 AND 1 * 10  
ORDER BY Rank DESC