I don't understand how this is different:
SELECT person FROM principals
WHERE event IN (SELECT event FROM principals WHERE person = $p AND
tag_type = " .MARR. ")
AND person != $p
ORDER BY sort_date
Or without subselects:
SELECT p1.person
FROM principals p1
JOIN principals p2 USING(event)
WHERE p2 person = $p
AND p2.tag_type = " .MARR. "
AND p1.person != $p
ORDER BY sort_date
Am I being confused?
Dmitri
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Leif B.
> Kristensen
> Sent: Thursday, September 22, 2005 2:12 PM
> To: pgsql-sql@postgresql.org
> Subject: Re: [SQL] Help with a view
>
>
> On Thursday 22 September 2005 20:03, Dmitri Bichko wrote:
>
> > SELECT * FROM principals WHERE event = 15821 AND person != 2?
>
> Sure, that's a concise answer to what I actually wrote, but it wasn't
> exactly what I intended :)
>
> Basically, what I've got is the first person and the
> tag_type. I can do
> it with a function from PHP:
>
> function get_spouses($p) {
> $handle = pg_query("select person from principals
> where event in (select event from principals
> where person = $p and tag_type = " .MARR. ")
> order by sort_date");
> $i=0;
> $spouses = array();
> while ($row = pg_fetch_row($handle) {
> if $row[0] != $p
> $spouses[$i++] = $row[0];
> }
> return $spouses;
> }
>
> But this is *ugly* ...
> --
> Leif Biberg Kristensen
> http://solumslekt.org/
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 5: don't forget to increase your free space map settings
>
The information transmitted is intended only for the person or entity to which
it is addressed and may contain confidential and/or privileged material. Any
review, retransmission, dissemination or other use of, or taking of any action
in reliance upon, this information by persons or entities other than the
intended recipient is prohibited. If you received this in error, please contact
the sender and delete the material from any computer
---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend
