无效的列名 SQL Server 2012

Question

如何在WHERE 子句中使用名称Rowss？

SELECT TOP 10 
    ROW_NUMBER() OVER(ORDER BY dp.IdPytanie) AS Rowss,
    dp.IdPytanie
    ,dp.SpecjalnePytanie
 FROM dodajtemat_pytanie dp
 WHERE 
    (@RowBegining = 0 OR convert(int,Rowss) >= @RowBegining)
    AND (@RowEnd = 0 OR Rowss <= @RowEnd)

错误

这个作品->

 @RowEnd = 0 OR ROW_NUMBER() OVER(ORDER BY dp.IdPytanie) <= @RowEnd

Answer 1

像这样使用子查询或 CTE：

WITH CTE
AS
(
    SELECT 
      ROW_NUMBER() OVER(ORDER BY dp.IdPytanie) AS Rowss,
      dp.IdPytanie,
      dp.SpecjalnePytanie
    FROM dodajtemat_pytanie dp
)
SELECT *
FROM CTE
WHERE (@RowBegining = 0 OR Rowss >= @RowBegining)
  AND (@RowEnd      = 0 OR Rowss <= @RowEnd);

WHERE 子句在SELECT 语句之前进行逻辑评估，因此它无法识别新创建的别名Rowss。

有关 SQL Server 中逻辑查询处理步骤的详细信息，请参阅：

• Logical Query Processing Poster by Itzik Ben