Re: Comparing two slices within one table efficiently - Mailing list pgsql-sql

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Christian Kindler [13/08/07 21:34 +0200]:
> Yes and you could make it even more speedy with the use table partitioning.
> http://www.postgresql.org/docs/8.1/interactive/ddl-partitioning.html

Thanks for all your speedy help, everyone. I tried doing a "self join"
and that sped things up enormously (query took on the order of 30
seconds to compare two million-row table slices, resulting in a 20K
row result). I will also try re-ordering the unique constraint to get
speedier indexing out of it and will look at table partitioning.

Regards,
Ken

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