OR-ing rows of bits

From: "Thomas T(dot) Thai" <tom(at)minnesota(dot)com>
To: PostgreSQL General <pgsql-general(at)postgresql(dot)org>
Subject: OR-ing rows of bits
Date: 2001-12-06 03:55:30
Message-ID: Pine.NEB.4.40.0112052153300.4508-100000@ns01.minnesota.com
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what's the best way of OR-ing rows of bits or integers? SUM works for bits
that are all atomic (1, 2, 4, 8, ...) but not for inclusive (1, 3, 7,
...).

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