From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
---|---|
To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
Cc: | PG Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Distinct types |
Date: | 2008-11-28 11:46:40 |
Message-ID: | 492FDA20.4080907@gmx.net |
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Thread: | |
Lists: | pgsql-hackers |
Simon Riggs wrote:
> On Tue, 2008-11-25 at 12:21 +0200, Peter Eisentraut wrote:
>> Peter Eisentraut wrote:
>>> Here is an implementation of distinct types,
>> I'm withdrawing this patch from the current commit fest for further
>> work. For the record, I have attached the current patch, including the
>> documentation work by Jeff Davis.
>
> Shame, this was sorely needed.
I understand, but the work required to make it work properly is too much
under the commit fest spirit right now. In particular, I'm thinking we
should try to devise a clever way to make the CREATE ORDERING facility
that SQL has for user-defined types interface with our more general
operator and operator class mechanisms. This would then also benefit
other sorts of user-defined types. There are also a number of unclear
assumptions about the domain behavior implicitly in the system that will
possibly require a lengthy shaking-out process if we add other sorts of
derived types.
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