Check for an empty result

From: Eus <eus(at)member(dot)fsf(dot)org>
To: Postgresql General Mailing List <pgsql-general(at)postgresql(dot)org>
Subject: Check for an empty result
Date: 2009-02-13 08:57:48
Message-ID: 291867.98182.qm@web37608.mail.mud.yahoo.com
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Hi Ho!

Is there a way to check whether or not a subquery returns an empty result set?

Googling with the following keywords does not help:

postgre check "empty result set"
sql check empty result

Thank you.

Best regards,
Eus (FSF member #4445)

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