detecting NULL from libpq...

From: dave madden <dhm(at)paradigm(dot)webvision(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: detecting NULL from libpq...
Date: 1998-06-19 22:28:04
Message-ID: 199806192228.PAA27643@paradigm.webvision.com
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Hi. I'm wondering if it's possible to tell whether a field returned
by PQgetvalue() is NULL? Can one distinguish between a varchar field
that contains a string of zero length and a varchar field that is
NULL? (And if so, how? :-)

regards,
d.

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