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From "Chris Lu" <>
Subject search for empty field?
Date Tue, 02 Sep 2008 08:23:26 GMT
Is it possible to query for documents that have empty values for a field?

Say need to find documents with category empty, I tried negative query:
But it returns 0 document. I think "category:*" is basically match all, so
this "-category:*" doesn't work.


Chris Lu
Instant Scalable Full-Text Search On Any Database/Application
Lucene Database Search in 3 minutes:
DBSight customer, a shopping comparison site, (anonymous per request) got
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