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

From: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: Pavel Stehule <stehule(at)kix(dot)fsv(dot)cvut(dot)cz>, pgsql-patches(at)postgresql(dot)org
Subject: Re: patch for between symmetric, asymmetric (from TODO)
Date: 2005-06-02 01:04:03
Message-ID: 429E5B03.8070908@familyhealth.com.au
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> 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.

And that's also been submitted. The problem then is making the
optimizer recognise it as a range query...

Chris

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