sql - “as”列上的 Sql where 条件

Question

我有这个查询：

SELECT Param1, Param2 AS P1
FROM SomeTable

我想做这样的事情：

WHERE P1 > 2

有办法做到这一点吗？当然有一个查询而不是Param2。

score 2 · Accepted Answer

2

WITH ABC
AS
(
SELECT Param1, Param2 AS P1
FROM SomeTable
)
SELECT * from ABC where P1>2

于 2012-12-26T06:16:23.970 回答

score 0 · Accepted Answer

0

您可以使用having

尝试这个

select param1,param2 as p1
 from table
 having p1 > 2

于 2012-12-26T06:15:38.677 回答

score 0 · Accepted Answer

而不是 where 使用有子句..

    SELECT Param1, Param2 AS P1 
     FROM SomeTable 
     having P1>2;

score 0 · Accepted Answer

尝试这个，

SELECT Param1, 
[P1] = Param2
FROM SomeTable
WHERE [P1] > 2

如果您使用的是 ms sql 这应该可以

score 0 · Accepted Answer

您可以使用子查询：

SELECT Param1, P1
FROM
(
  SELECT Param1, Param2 AS P1
  FROM SomeTable
) src
WHERE P1 > 2

score 0 · Accepted Answer

阅读此内容以获取详细说明：

拉吉

score 0 · Accepted Answer

0

HAVING行不通。上面提到的通用表是一个很好的方法。

于 2012-12-26T10:02:49.687 回答

7 回答 7