From: Chris Travers <chris@travelamericas.com>
To: Lenard, Rohan (Rohan) <rlenard@avaya.com>
Cc: Thomas F. O'Connell <tfo@sitening.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Need indexes on empty tables for good performance ?
Date: Tue, 30 Aug 2005 10:43:05 -0700
Message-ID: <43149AA9.4080902@travelamericas.com> (raw)
In-Reply-To: <2773CAC687FD5F4689F526998C7E4E5F489B7B@au3010avexu1.global.avaya.com>
References: <2773CAC687FD5F4689F526998C7E4E5F489B7B@au3010avexu1.global.avaya.com>
Lenard, Rohan (Rohan) wrote:
> Actually the indexes on the child table do seem to get used - I just
> wanted to make sure there was no penalty not having indexes on the
> empty parent tables.
>
> You are right - the parent is the best way to get at the unknown
> children ...
Indexes are created in the inheritance process, iirc. However, index
entries are not inherited, which means that index-based unique
constraints don't properly get inherited.
Best Wishes,
Chris Travers
Metatron Technology Consulting
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To: pgsql-performance@postgresql.org
Cc: chris@travelamericas.com, rlenard@avaya.com, tfo@sitening.com
Subject: Re: Need indexes on empty tables for good performance ?
In-Reply-To: <43149AA9.4080902@travelamericas.com>
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