Avoiding empty queries in tsearch

From: "Doug Cole" <doug(at)shackprices(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Avoiding empty queries in tsearch
Date: 2007-01-14 20:29:54
Message-ID: 7b8d80330701141229p7475884bm637cf3d50111e35b@mail.gmail.com
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I am having trouble with to_tsquery when the query is all stop words.
Rather than return everything as a match, it returns nothing with the
notice:

NOTICE: Query contains only stopword(s) or doesn't contain lexem(s), ignored

What is the best way to check for this, I was hoping to be able to
check if the resulting tsquery was empty or null, but haven't found a
way. Any advice?
Thanks for your help,
Doug

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