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Re: partitioned tables query not using indexes

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Kenneth Marshall <ktm(at)rice(dot)edu>
Cc: Kevin Kempter <kevink(at)consistentstate(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: partitioned tables query not using indexes
Date: 2010-02-28 22:46:52
Message-ID: 4B8AF25C.3030209@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-performance
On 2/28/10 1:51 PM, Kenneth Marshall wrote:
> On Sun, Feb 28, 2010 at 12:29:14PM -0800, Josh Berkus wrote:
>>> However the same query against the base table when specifying the check 
>>> constraint key in the where clause produces sequential scans:
>> Does the "master" table have the same indexes as the slave partitions?
>>
>> --Josh Berkus
>>
> Does this help? I have an empty base table without indexes and partitions
> underneath that do have the index. I did not think that an index on the
> parent table did anything.

I'm not sure that it does, but "try it and see" is easier than reading
the planner code.

--Josh Berkus

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