Обсуждение: Re: [COMMITTERS] pgsql: Fix EquivalenceClass processing for nested append relations.

On Fri, Mar 28, 2014 at 03:50:10PM +0000, Tom Lane wrote:
> Fix EquivalenceClass processing for nested append relations.

If this is a bug fix, shouldn't it be back-patched?

Cheers,
David.
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David Fetter <david@fetter.org> writes:
> On Fri, Mar 28, 2014 at 03:50:10PM +0000, Tom Lane wrote:
>> Fix EquivalenceClass processing for nested append relations.

> If this is a bug fix, shouldn't it be back-patched?

It's a planner improvement; it's not a bug fix in the sense that previous
plans were wrong.  We tend to err on the side of not back-patching such
changes ... some people complain when minor updates cause plan choices to
change under them.
        regards, tom lane