From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Larry White <ljw1001(at)gmail(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: using inheritance in production application. |
Date: | 2004-12-13 04:33:58 |
Message-ID: | 200412130433.iBD4XwX12956@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-general |
Larry White wrote:
> How 'ready for prime-time' is the table inheritance feature? I've
> seen some postings about particular issues (lack of full FK support,
> for example), but would like to get an overall sense of the stability
> and robustness of the feature.
>
> Also, is there a performance hit in using inheritance? For example if
> I have a sub-table that adds a couple of columns to a base table,
> would it be slower to query that structure than it would to represent
> the extra columns as a separate table that would be joined with the
> base table?
All inheritance problems are mentioned on the TODO list, and none are
performance-related. They all revolve around the inability of an index
to span multiple tables.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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