Re: Updateable cursors patch

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: FAST PostgreSQL <fastpgs(at)fast(dot)fujitsu(dot)com(dot)au>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: Updateable cursors patch
Date: 2007-04-02 22:47:06
Message-ID: 200704022247.l32Ml6Z13339@momjian.us
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Your patch has been added to the PostgreSQL unapplied patches list at:

http://momjian.postgresql.org/cgi-bin/pgpatches

It will be applied as soon as one of the PostgreSQL committers reviews
and approves it.

---------------------------------------------------------------------------

FAST PostgreSQL wrote:
> Attached is a working updateable cursors patch. The core functionality has
> been implemented and the patch also contains the regression tests and
> documentation.
>
> However there are still a couple of TODOs that needs to be done. The planner
> has to be taught to treat a DELETE/UPDATE WHERE CURRENT OF as a TidScan.
> Currently it follows the sequential scan route and extracts the current tuple
> based on the cursor position from the portal. Also, an issue that needs to
> be looked at is how to treat joins with an updateable cursor. Currently it is
> allowed and when it comes to delete or update, an error message is thrown
> from the executor.
>
> Rgds,
> Arul Shaji
>
>

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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
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