Re: pg_dump ordering

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au>
Cc: "Hackers" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_dump ordering
Date: 2003-08-01 03:47:02
Message-ID: 4707.1059709622@sss.pgh.pa.us
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"Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au> writes:
>> This leaves some issues still to be
>> resolved ... like what to do when dumping a pre-7.3 database ... but I
>> think it's the core of a maintainable solution.

> Problem is you'd need to sort tables by the youngest column in the table,
> which is a pain. Because the main problem is this:
> CREATE TABLE...
> CREATE TYPE newtype
> ALTER TABLE ADD COLUMN newtype
> That always breaks...

And it will continue to break, for dumps from pre-7.3 databases.
I think it's a mistake to spend much time on trying to solve that
problem; it'll just distract you from solving the presently-useful
case.

I don't want to see the behavior get a lot worse for old databases,
mind you; I'm just saying it doesn't have to get magically better.

regards, tom lane

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