| From: | <mallah(at)trade-india(dot)com> |
|---|---|
| To: | <david(dot)bear(at)asu(dot)edu> |
| Cc: | <iddwb(at)moroni(dot)pp(dot)asu(dot)edu>, <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: counting tupples |
| Date: | 2002-10-28 15:21:37 |
| Message-ID: | 1292.203.145.130.142.1035818497.squirrel@mail.trade-india.com |
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| Thread: | |
| Lists: | pgsql-admin |
Hi folks,
There is "reltuples" in pg_class which is approximately equal to
select count(*) from relation.
i think its updated only on VACUUMING ?
(david its not answer to ur question sorry)
regds
mallah.
> I couldn't find anything relating to getting the cardinality of a table. I know a select will
> display number of rows. I was hoping there was a 'cheaper' (less expensive) way than doing a
> full select.
> --
> David Bear
> College of Public Programs/ASU
>
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