Re: SQL subquery to supply table name?
| От | Scott Chapman |
|---|---|
| Тема | Re: SQL subquery to supply table name? |
| Дата | |
| Msg-id | 200209261745.20376.scott_list@mischko.com обсуждение исходный текст |
| Ответ на | SQL subquery to supply table name? (Scott Chapman <scott_list@mischko.com>) |
| Ответы |
Re: SQL subquery to supply table name?
Re: SQL subquery to supply table name? |
| Список | pgsql-general |
Here's the details:
Table "reviews"
Column | Type | Modifiers
---------------------------------+---------+----------------------------------------
review_num | integer | default
nextval('review_number'::text)
table_quest | text |
Table "mpe_quest"
Column | Type | Modifiers
------------------------+---------+-----------
review_num | integer |
txtcompanyname | text |
select foo.txtcompanyname from (select table_quest from reviews where
review_num=28) as foo where review_num=28;
It comes back and says No such attribute or function foo.txtcompanyname.
Scott
On Thursday 26 September 2002 04:04 pm, Scott Chapman wrote:
> I have a situation where a table contains table names. I need to know if I
> can make a Postgresql query that will have a subquery which supplies the
> table name I want to deal with. Can this be done?
>
> Something like this:
> select column from (select table_name from table2 where key=value) where
> key=value;
>
> Scott
>
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