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Re: queries with lots of UNIONed relations - Mailing list pgsql-performance

From Robert Haas
Subject Re: queries with lots of UNIONed relations
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Msg-id AANLkTikYEX25b4E_AoZk=WWspv2OC7ZKct2VeZb1NCMj@mail.gmail.com
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In response to Re: queries with lots of UNIONed relations  (Jon Nelson <jnelson+pgsql@jamponi.net>)
Responses Re: queries with lots of UNIONed relations
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On Thu, Jan 13, 2011 at 3:12 PM, Jon Nelson <jnelson+pgsql@jamponi.net> wrote:
> I still think that having UNION do de-duplication of each contributory
> relation is a beneficial thing to consider -- especially if postgresql
> thinks the uniqueness is not very high.

This might be worth a TODO.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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