Re: patch for between symmetric, asymmetric (from TODO)

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Pavel Stehule <stehule(at)kix(dot)fsv(dot)cvut(dot)cz>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: patch for between symmetric, asymmetric (from TODO)
Date: 2005-06-01 13:09:32
Message-ID: 200506011509.32853.peter_e@gmx.net
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Pavel Stehule wrote:
> I did task from TODO: Add BETWEEN ASYMMETRIC/SYMMETRIC.

The implementation in this patch has the same problems as all the
previously rejected attempts: it evaluates its arguments twice. You
need to make BETWEEN SYMMETRIC into a separate node type that evaluates
each argument only once.

--
Peter Eisentraut
http://developer.postgresql.org/~petere/

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