Full Text Search, avoiding lexemes search

From: Daniel Vázquez <daniel2d2art(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Full Text Search, avoiding lexemes search
Date: 2012-01-27 14:41:38
Message-ID: CA+KJVfxAF_hRUDKQrfSyw7whhb5_BoNcsq7ijfoPgEzAF45Jtw@mail.gmail.com
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Hi guys!

Full text search, searches by lexemes, this minds that if you are finding
for "gato" word you are really finding for {gat} lexeme.
I you construct vectors for the words "gato", "gatos", "gata", "gatas", all
have the same lexema {gat}
Then the search "gato" that is to say the search {gat} matches with all
previous vectors.

There some way (configuration, query....) to match only for "gato" and
avoid "gatos" "gata" "gatas", with FTS ??
Or match only for "gato" "gatos" buy no for "gata" "gatas"?

Tnks!

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