Re: Greatest Common Divisor

From: Chapman Flack <chap(at)anastigmatix(dot)net>
To: Robert Haas <robertmhaas(at)gmail(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Vik Fearing <vik(dot)fearing(at)2ndquadrant(dot)com>, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Greatest Common Divisor
Date: 2020-01-03 18:57:42
Message-ID: 7f17c4af-4685-751c-6ad8-efe5b126f9fc@anastigmatix.net
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On 1/3/20 1:46 PM, Robert Haas wrote:
> On Fri, Jan 3, 2020 at 1:10 PM Merlin Moncure <mmoncure(at)gmail(dot)com> wrote:
>> Just stop doing it. It's very little extra work to package an item
>> into an extension and this protects your hapless users who might have
>> implemented a function called gcd() that does something different.
>> ...
> There are counter-arguments to that, though. Maintaining a lot of
> extensions with only one or two functions in them is a nuisance.
> Having things installed by default is convenient for wanting to use
> them. Maintaining contrib code so that it works whether or not the SQL
> definitions have been updated via ALTER EXTENSION .. UPDATE takes some
> work and thought, and sometimes we screw it up.

Is there a middle ground staring us in the face, where certain things
could be added in core, but in a new schema like pg_math (pg_ !), so
if you want them you put them on your search path or qualify them
explicitly, and if you don't, you don't?

Regards,
-Chap

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