Re: How to pass around collation information

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: How to pass around collation information
Date: 2010-05-28 19:20:22
Message-ID: 1275074422.12068.18.camel@vanquo.pezone.net
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On fre, 2010-05-28 at 15:03 -0400, Robert Haas wrote:
> I think we need to think of the comparison operators as ternary, and
> the COLLATE syntax applied to columns or present in queries as various
> ways of setting defaults or explicit overrides for what the third
> argument will end up being.

How could this extend to things like isalpha() or upper() that would
need access to ctype information?

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