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Re: [BUG?] strange behavior in ALTER TABLE ... RENAME TO on inherited columns

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: KaiGai Kohei <kaigai(at)ak(dot)jp(dot)nec(dot)com>, KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>, Bernd Helmle <mailings(at)oopsware(dot)de>, pgsql-hackers(at)postgresql(dot)org, Thom Brown <thombrown(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Subject: Re: [BUG?] strange behavior in ALTER TABLE ... RENAME TO on inherited columns
Date: 2010-02-01 18:40:06
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Mon, Feb 1, 2010 at 1:31 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> I have cleaned up and simplified this patch.  Attached is the version
>> I intend to commit.  Changes:
> Minor suggestions:
> I think the names like "rel_parents" would read better as
> "rel_numparents" etc.  As-is, the reader could be forgiven for expecting
> that this will be a list of parent relation OIDs or some such.

I thought about that but ended up being lazy and leaving it the way I
had it.  I'll go be un-lazy.

> The new loop added within find_all_inheritors could really do with an
> addition to the comments, along the line of "If a child is already
> seen, increment the corresponding numparents count".


> I don't trust the proposed "order by attrelid" business in the
> regression test --- once in a blue moon, that will fail because the
> OID counter wrapped around mid-test, and we'll get an unreproducible
> bug report.  I'd suggest order by attrelid::regclass::text.

Wow, didn't think of that.  Will change.

> Looks sane otherwise.

Thanks for the review.


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