Re: pg_upgrade vs user created range type extension

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_upgrade vs user created range type extension
Date: 2016-09-22 23:42:00
Message-ID: 1fad38b5-33ea-fb25-7e10-e6222fa7d361@dunslane.net
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On 09/22/2016 07:33 PM, Tom Lane wrote:
> Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
>> I have just encountered an apparent bug in pg_upgrade (or possibly pg_dump).
> Hmm, it sort of looks like pg_dump believes it should dump the range's
> constructor function in binary-upgrade mode, while the backend is creating
> the constructor function during CREATE TYPE anyway. But if that's the
> case, upgrade of user-defined range types would never have worked ...
> seems like we should have noticed before now.
>
> If that diagnosis is correct, we should either change pg_dump to not
> dump that function, or change CREATE TYPE AS RANGE to not auto-create
> the constructor functions in binary-upgrade mode. The latter might be
> more flexible in the long run.
>
>

Yeah, I think your diagnosis is correct. I'm not sure I see the point of
the flexibility given that you can't specify a constructor function for
range types (if that feature had been available I would probably have
used it in this extension).

cheers

andrew

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