Avoiding empty queries in tsearch

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От Doug Cole
Тема Avoiding empty queries in tsearch
Дата
Msg-id 7b8d80330701141541s745e08edle079c4e403c5f06e@mail.gmail.com
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Список pgsql-general
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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