Re: Ordering 'A', 'B', ..., 'Z', 'AA', 'AB', ...

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: pgman(at)candle(dot)pha(dot)pa(dot)us
Cc: Charles Albrecht <charlesa(at)pobox(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: Ordering 'A', 'B', ..., 'Z', 'AA', 'AB', ...
Date: 2002-02-25 20:09:35
Message-ID: 200202252009.g1PK9ZX07998@candle.pha.pa.us
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pgman wrote:
> > ORDER BY
> > CASE WHEN TABLE.MYCOLUMN LIKE '__'
> > THEN TABLE.MYCOLUMN
> > ELSE ' ' || TABLE.MYCOLUMN END
> >
> > The syntax may be a little different in pg, though.
> >
> > It's also easy enough to do in Perl with a custom sort sub.
>
> In PostgreSQL, you would need to create a column with the CASE, the
> order by that using the column number or AS to name the column and order
> on that name.

Sorry, I was wrong. You can use CASE in ORDER BY. I made a mistake in
my quick testing.

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