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From: "Aviran" <amordo@infosciences.com>
To: "'Lucene Users List'" <lucene-user@jakarta.apache.org>
Subject: RE: how to find field that has any value
Date: Mon, 11 Oct 2004 10:30:25 -0400
Message-ID: <009401c4af9e$dc07f8a0$6a00a8c0@Aviran>
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Importance: Normal

You can try to use a range query something like test:[null TO
"zzzzzzzzzzzzzzzz"]
Please note that you might get TooManyBooleanClause Exception, if you =
have
too many of them.

The other thing you can use is with the operator NOT. For all the Empty
fields you can fill them with a string lest say "empty" and then query =
for
-test:empty

Aviran

-----Original Message-----
From: MATL (Mats Lindberg) [mailto:matl@nnit.com]=20
Sent: Wednesday, October 06, 2004 16:27 PM
To: Lucene Users List
Subject: how to find field that has any value


Hello
=20
i have a probably simple question for some of you.
=20
Since lucene does not allow a query to start with a wild card (* or ?) =
how
would i find all documents in lets say field test that has something in =
that
field, or is not empty.
=20
my first thought would be to do something like this.
=20
test:________                (cause the value ______ isn't very likely
to be present)
=20
=20
test:*                            (would be the correct way, i guess,
but lucene doesn't allow that)
=20
=20
does anyone have a greater idea.
=20
Best regards,
Mats Lindberg


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