Thanks, it did help. Now queries run in zero time.
I had thought of doing that....but since the same configuration was working ok on MSSQL I thought it should also here.
Now with that index the server query times are a lot faster than MSSQL without it.
Since it is working I will leave it like that. At least till I know more on how postgre behaves (and databases in general) with indexes.
Thanks again!
On Thu, Jan 27, 2011 at 4:12 PM, hubert depesz lubaczewski
<depesz@depesz.com> wrote:
On Thu, Jan 27, 2011 at 04:04:02PM +0200, Michael Kemanetzis wrote:
> Hello, I'm experiencing a strange behavior running a simple select query on
> a table that has about 12 million rows. Specifically, changing the "LIMIT"
> value seems to change the execution plan but the result in one of the cases
> is unjustifiably slow, as if it ignores all indexes.
>
> The table structure, the queries used and the results are here:
>
http://pastebin.com/fn36BuKs >
> Is there anything I can do to improve the speed of this query?
could help.
Best regards,
depesz
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