not tested:
delete from table_a where not exists (select * from
table_b where breferer = areferer)
tested:
select br_coid from brokers where not exists (select * from
coidinfo where c_coid = br_coid)
Kai
On Tue, 18 Apr 2000, The Hermit Hacker
wrote
>
> And now for todays trick question ...
>
> have two tables, one of them is simple a string and a serial value, the
> second one is the serial value and more data ...
>
> I want to clean out all records from tableB older then date (that is
> easy), then I want to clean out all values from tableB where there is no
> corresponding record in tableB ...
>
> basically tableA's serial field is unique, but tableB's could have
> multiple records associated with.
>
> basically, what i've tried to do in a SELECT is something like:
>
> SELECT referer_id
> FROM referer_data
> EXCEPT
> SELECT distinct(referer_id) FROM referer_link;
>
> But after 15 minutes, that's still running, so obviously that won't work ...
>
> I can do it "in perl", but would love to come up with a nice, elegant, 'in
> server' method of doing this instead :)
>
> Thanks...
>
> Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy
> Systems Administrator @ hub.org
> primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
>