| From: | Jasen Betts <jasen(at)xnet(dot)co(dot)nz> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: automated row deletion |
| Date: | 2009-10-10 10:12:00 |
| Message-ID: | hapmlg$unr$1@reversiblemaps.ath.cx |
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| Lists: | pgsql-general |
On 2009-10-07, Dave Huber <DHuber(at)letourneautechnologies(dot)com> wrote:
> --_000_7CDADB576E07AC4FA71E1B12566C9126540E0A0C34ltimb1LTIcom_
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> A colleague gave me the following query to run:
>
> DELETE FROM data_log_20msec_table WHERE (log_id IN (SELECT log_id FROM data=
> _log_20msec_table ORDER BY log_id DESC OFFSET 10000000))
looks slower than neccessary.
DELETE FROM data_log_20msec_table WHERE log_id < (SELECT log_id FROM
data= _log_20msec_table ORDER BY log_id DESC OFFSET 10000000 LIMIT 1 )
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