| From: | Matteo Beccati <php(at)beccati(dot)com> |
|---|---|
| To: | "Christian Paul B(dot) Cosinas" <cpc(at)cybees(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Deleting Records |
| Date: | 2005-10-20 08:52:29 |
| Message-ID: | 43575ACD.8000206@beccati.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
Hi,
> What could possibly I do so that I can make this fast?
>
> Here is the code inside my function:
>
> FOR temp_rec IN SELECT * FROM item_qc_doer LOOP
> DELETE FROM qc_session WHERE item_id = temp_rec.item_id;
> DELETE FROM item_qc_doer WHERE item_id = temp_rec.item_id;
> END LOOP;
Qhat about just using:
DELETE FROM gc_session WHERE item_id IN
(SELECT item_id FROM item_qc_doer)
DELETE FROM item_qc_doer;
It doesn't make sense to run 2 x 22.000 separate delete statements
instead that only two...
And... What about using a foreing key?
Best regards
--
Matteo Beccati
http://phpadsnew.com
http://phppgads.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Christopher Kings-Lynne | 2005-10-20 08:57:31 | Re: Deleting Records |
| Previous Message | 2005-10-20 08:50:50 | Re: Deleting Records |