Question

我可以在SQL中执行以下操作：

SELECT ROW_NUMBER() OVER (ORDER BY c.SomeField2 ASC) AS r, c.cID
FROM 
 (
    SELECT c.SomeField1, c.SomeField2, c.SomeField3, t.SomeField1Text, p.SomeField2Text
    FROM MyTable c
    JOIN #TempTable1 t ON c.SomeField1 = t.SomeField1
    JOIN #TempTable2 p ON c.SomeField2 = p.SomeField2
) c

但是，当我尝试对我的一个临时表中的列进行排序时，如此...

SELECT ROW_NUMBER() OVER (ORDER BY p.SomeField2Text ASC) AS r, c.cID
FROM 
 (
    SELECT c.SomeField1, c.SomeField2, c.SomeField3, t.SomeField1Text, p.SomeField2Text
    FROM MyTable c
    JOIN #TempTable1 t ON c.SomeField1 = t.SomeField1
    JOIN #TempTable2 p ON c.SomeField2 = p.SomeField2
) c

...我收到以下错误：

The multi-part identifier "p.SomeFieldText2" could not be bound.

你知道我为什么会收到这个错误吗？我很困惑，因为该列在我的SELECT子句中。

Answer 1

您要查询的字段名为SomeField2Text，而不是SomeFieldText2：

SELECT ROW_NUMBER() OVER (ORDER BY p.SomeField2Text ASC) AS r, c.cID
FROM 
 (
    SELECT c.SomeField1, c.SomeField2, c.SomeField3, t.SomeField1Text, p.SomeField2Text
    FROM MyTable c
    JOIN #TempTable1 t ON c.SomeField1 = t.SomeField1
    JOIN #TempTable2 p ON c.SomeField2 = p.SomeField2
) c

Answer 2

您应该将子查询视为具有别名C的表。

这就是你需要通过c.SomeField2列

订购的原因

SELECT ROW_NUMBER() OVER (ORDER BY c.SomeFieldText ASC) AS r, c.cID
FROM 
 (
    SELECT c.SomeField1, c.SomeField2, c.SomeField3, t.SomeField1Text, p.SomeField2Text, p.SomeField2
    FROM MyTable c
    JOIN #TempTable1 t ON c.SomeField1 = t.SomeField1
    JOIN #TempTable2 p ON c.SomeField2 = p.SomeField2
) c

SQL - 在OVER子句中排序

2 个答案: