Re: Distinct types

From: "Greg Stark" <stark(at)enterprisedb(dot)com>
To: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
Cc: "Peter Eisentraut" <peter_e(at)gmx(dot)net>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Simon Riggs" <simon(at)2ndquadrant(dot)com>, "PG Hackers" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Distinct types
Date: 2008-11-28 23:11:39
Message-ID: 4136ffa0811281511q6a9797f2id71f863619b10508@mail.gmail.com
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I have a feeling what it would actually take to make this useful might
be to turn every type into a kind of polymorphic type like our anyelem
and anyarray. So substring(mystring) would work and return a mystring
but mystring=string would fail.

--
greg

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