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* How to write this query!
@ 2003-07-13 16:32 Jo <joacn@yahoo.co.uk>
2003-07-21 11:46 ` Re: How to write this query! Richard Huxton <richardh@archonet.com>
0 siblings, 1 reply; 2+ messages in thread
From: Jo @ 2003-07-13 16:32 UTC (permalink / raw)
To: pgsql-sql
These are my PostgreSQL tables:
pid | name
1 | A
2 | B
3 | C
4 | D
5 | E
tid | pid 1 | pid 2 | pid 3
1 | 1 | 2 | 3
Bascially, I would like to write a query to list only
the names which their "pid" match those pids in the
other table. If anyone knows, pls help!!
Many Thanks!!
Joe
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^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: How to write this query!
2003-07-13 16:32 How to write this query! Jo <joacn@yahoo.co.uk>
@ 2003-07-21 11:46 ` Richard Huxton <richardh@archonet.com>
0 siblings, 0 replies; 2+ messages in thread
From: Richard Huxton @ 2003-07-21 11:46 UTC (permalink / raw)
To: Jo <joacn@yahoo.co.uk>; pgsql-sql
On Sunday 13 July 2003 17:32, Jo wrote:
> These are my PostgreSQL tables:
>
> pid | name
> 1 | A
> 2 | B
> 3 | C
> 4 | D
> 5 | E
>
> tid | pid 1 | pid 2 | pid 3
> 1 | 1 | 2 | 3
>
> Bascially, I would like to write a query to list only
> the names which their "pid" match those pids in the
> other table. If anyone knows, pls help!!
Jo - not sure how your message took this long to reach the list, but it
doesn't look like someone has answered, so...
SELECT DISTINCT a.name FROM table_a AS a, table_b as b WHERE a.pid=b.pid1 OR
a.pid=b.pid2 OR a.pid=b.pid3;
--
Richard Huxton
Archonet Ltd
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2003-07-13 16:32 How to write this query! Jo <joacn@yahoo.co.uk>
2003-07-21 11:46 ` Richard Huxton <richardh@archonet.com>
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