Question

我有多个使用相同数据子集的SELECT查询。我想重用它，所以没有重复的子查询或WITH子句。但是，由于权限不足，我无法创建TABLE或VIEW。那么有解决方法吗？

我正在使用TOAD Oracle。

例如，

WITH LOCAL_RESULTS
    AS (SELECT a, b, c, d...
          FROM SURVEY )
SELECT A, B
FROM LOCAL_RESULTS
where condition=1


WITH LOCAL_RESULTS
    AS (SELECT a, b, c, d...
          FROM SURVEY )
SELECT A, C
FROM LOCAL_RESULTS
where condition=2


WITH LOCAL_RESULTS
    AS (SELECT a, b, c, d...
          FROM SURVEY )
SELECT B, D, A... 
FROM LOCAL_RESULTS
where condition=3

感谢您的帮助。

Answer 1

联合查询可能有效。

with local_results as
(subquery goes here)

select a, b, c, 1 condition
from local_results
where whatever
union 
select a, b, null c, 2 condition
from local_results
etc

重用子查询导致Oracle中的多个SELECT（无法创建表）

1 个答案: