Re: Confronting the maximum column limitation

From: Steve Atkins <steve(at)blighty(dot)com>
To: pgsql-general General <pgsql-general(at)postgresql(dot)org>
Subject: Re: Confronting the maximum column limitation
Date: 2008-08-12 21:04:38
Message-ID: 2795446C-45AC-4750-ACB3-20777D64F38D@blighty.com
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On Aug 12, 2008, at 1:15 PM, Jeff Gentry wrote:

> Hi there ...
>
> I recently discovered that there is a hard cap on the # of columns,
> being
> at 1600. I also understand that it is generally unfathomable that
> anyone
> would ever feel limited by that number ... however I've managed to
> bump
> into it myself and was looking to see if anyone had advice on how to
> manage the situation.
>
> As a bit of background, we have a Postgres database to manage
> information
> revolving around genomic datasets, including the dataset itself. The
> actual data is treated in other applications as a matrix, and while
> it has
> caused the DB design to be sub-optimal the model worked to just
> stash the
> entire matrix in the DB (the rest of the DB design is proper, but the
> storage of these matrices straight up is unorthodox ... for the
> convenience of having everything in the same storage unit with all
> of the
> other information, it has been worth the extra headache and potential
> performance dings).

What operations do you perform on the data? If it's just store and
retrieve, can you serialize them into a bytea (or xml) field?

Cheers,
Steve

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