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Re: How to pass around collation information

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
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 20:15:27
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Lists: pgsql-hackers
On Fri, May 28, 2010 at 3:20 PM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
> 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?

Good question.  :-(

Robert Haas
The Enterprise Postgres Company

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