patch for between symmetric, asymmetric (from TODO)

From: Pavel Stehule <stehule(at)kix(dot)fsv(dot)cvut(dot)cz>
To: pgsql-patches(at)postgresql(dot)org
Subject: patch for between symmetric, asymmetric (from TODO)
Date: 2005-06-01 09:21:47
Message-ID: Pine.LNX.4.44.0506011111050.27735-200000@kix.fsv.cvut.cz
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Hello

I did task from TODO: Add BETWEEN ASYMMETRIC/SYMMETRIC.

SELECT 2 BETWEEN 1 AND 5 -> true
SELECT 2 BETWEEN 5 AND 1 -> false
SELECT 2 BETWEEN SYMMETRIC 5 AND 1 -> true

this patch is based on Robert's B. Easter work from 2001 year.
http://archives.postgresql.org/pgsql-patches/2001-01/msg00022.php

it's trivial, only small change in parser.

Best regards
Pavel Stehule

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