| From: | Robert Vojta <vojta(at)ipex(dot)cz> |
|---|---|
| To: | Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: indexes and big tables |
| Date: | 2001-07-28 10:49:01 |
| Message-ID: | 20010728124900.F942@ipex.cz |
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| Lists: | pgsql-hackers |
> Is there any possibility of overlapping rows between the parts of the
> union? If not, I'd suggest union all, since that might get rid of the top
> level unique and sort steps (probably not a huge gain, but might help).
Hi,
thanx for the response, there is a little possibility of overlapping rows.
But, I removed date_part function and it use index now. It's too slow, so
I move all needed data into graphs_5m table and it works fine now, previous
time for graphs drawing was ~30-60seconds, today it's ~3-5 seconds. Thanx.
Best regards,
Robert
--
_
|-| __ Robert Vojta <vojta-at-ipex.cz> -= Oo.oO =-
|=| [Ll] IPEX, s.r.o.
"^" ====`o
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