Re: How to write this query!

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