Where子句基于函数的值

Question

我有一个SQL Server函数，它将一些数据组合起来输出地址

dbo.pt_FormatAddress(
    Permit_Address.Permit_No,
    Permit_Address.Permit_Fraction,
    Permit_Address.Permit_Direction,
    Permit_Address.Permit_Address,
    Permit_Address.Permit_Unit,
    Permit_Address.Permit_CityName,
    0,
    0,
    0
) as ADR

这将产生如下结果：

400 BELL STREET, SOMECITY

我想在WHERE条款中执行类似的操作：

WHERE ADR LIKE '%400 BELL STREET%'

这可能吗？

Answer 1

查询处理阶段的逻辑顺序是：

1. FROM
2. WHERE
3. GROUP BY
4. HAVING
5. 选择
6. ORDER BY

因此，您无法访问SELECT子句中WHERE中的别名

使用此：

WHERE
dbo.pt_FormatAddress(
    Permit_Address.Permit_No,
    Permit_Address.Permit_Fraction,
    Permit_Address.Permit_Direction,
    Permit_Address.Permit_Address,
    Permit_Address.Permit_Unit,
    Permit_Address.Permit_CityName,
    0,
    0,
    0
) LIKE '%400 BELL STREET%'

您还可以选择将主查询放在CTE中并使用其中的别名。

这样的事情：

;WITH C AS(
    SELECT dbo.pt_FormatAddress(
        Permit_Address.Permit_No,
        Permit_Address.Permit_Fraction,
        Permit_Address.Permit_Direction,
        Permit_Address.Permit_Address,
        Permit_Address.Permit_Unit,
        Permit_Address.Permit_CityName,
        0,
        0,
        0
    ) as ADR
    FROM yourTable
)
SELECT *
FROM C
WHERE ADR LIKE '%400 BELL STREET%'

LOGICAL QUERY PROCESSING