Re: Crosstab Problems - Mailing list pgsql-general

From Tom Lane
Subject Re: Crosstab Problems
Date
Msg-id 6329.1193287046@sss.pgh.pa.us
Whole thread Raw
In response to Re: Crosstab Problems  (Joe Conway <mail@joeconway.com>)
Responses Re: Crosstab Problems  ("Scott Marlowe" <scott.marlowe@gmail.com>)
List pgsql-general
Joe Conway <mail@joeconway.com> writes:
> Tom Lane wrote:
>> 1. Treat NULL rowid as a category in its own right.  This would conform
>> with the behavior of GROUP BY and DISTINCT, for instance.

> In any case, the attached changes the behavior to #1 for both flavors of
> crosstab (the original crosstab(text, int) and the usually more useful
> crosstab(text, text)).

> It is appropriate for 8.3 but not back-patching as it changes behavior
> in a non-backward compatible way and is probably too invasive anyway.

Um, if the previous code crashed in this case, why would you worry about
being backward-compatible with it?  You're effectively changing the
behavior anyway, so you might as well make it do what you've decided is
the right thing.

            regards, tom lane

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