The most recent version of this thread starts here:
http://archives.postgresql.org/pgsql-general/2005-03/msg00321.php .
Search the archives for table partition, union view and partition
inherits and you should find most relevant discussions.
Hope that helps!
On Thu, 17 Mar 2005 15:01:43 +0100, Lending, Rune
[EMAIL PROTECTED] wrote:
Hello all.
I am having a couple of tables with couple of hundre millions records in
them. The tables contains a timestamp column.
I am almost always interested in getting datas from a specific day or month.
Each day contains aprox. 400.000 entries.
When I do such queries as select ... from archive where m_date between
'2005-01-01' and '2005-02-01' group by ... and so on.
It takes very long. I am having indexes that kicks in, but still it takes
sometime.
I have splitted the archive table in smaller monthly tables, it then goes a
lot faster, but not fast enough.
I know simular systems that uses Oracle and gains a lot on performance
because of the partioning. That kind of anoyes me a bit :)
Does anyone of you have some good ideas on how speed up such queries on
huge tables?
regards
rune
--
Mike Rylander
[EMAIL PROTECTED]
GPLS -- PINES Development
Database Developer
http://open-ils.org
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