Re: [v9.5] Custom Plan API

From: Stephen Frost <sfrost(at)snowman(dot)net>
To: Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, PgHacker <pgsql-hackers(at)postgresql(dot)org>, Shigeru Hanada <shigeru(dot)hanada(at)gmail(dot)com>, Jim Mlodgenski <jimmy76(at)gmail(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp>
Subject: Re: [v9.5] Custom Plan API
Date: 2014-05-09 02:29:19
Message-ID: 20140509022919.GI2556@tamriel.snowman.net
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* Kouhei Kaigai (kaigai(at)ak(dot)jp(dot)nec(dot)com) wrote:
> > I didn't ask this before but it's been on my mind for a while- how will
> > this work for custom data types, ala the 'geometry' type from PostGIS?
> > There's user-provided code that we have to execute to check equality for
> > those, but they're not giving us CUDA code to run to perform that equality...
> >
> If custom-plan provider support the user-defined data types such as PostGIS,
> it will be able to pick up these data types also, in addition to built-in
> ones. It fully depends on coverage of the extension.
> If not a supported data type, it is not a show-time of GPUs.

So the extension will need to be aware of all custom data types and then
installed *after* all other extensions are installed? That doesn't
strike me as workable...

Thanks,

Stephen

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