Thanks Erick for reminding me of this! I only need to validate a index and make sure the content are correctly retrieved and index doesn't have empty fields. So I'd better simply go through all document by id and check them directly.
Thanks! -- Chris Lu ------------------------- Instant Scalable Full-Text Search On Any Database/Application site: http://www.dbsight.net demo: http://search.dbsight.com Lucene Database Search in 3 minutes: http://wiki.dbsight.com/index.php?title=Create_Lucene_Database_Search_in_3_minutes DBSight customer, a shopping comparison site, (anonymous per request) got 2.6 Million Euro funding! On Wed, Sep 3, 2008 at 11:49 AM, Erick Erickson <[EMAIL PROTECTED]>wrote: > This has been discussed multiple times, so looking at the > searchable archive will give you more detailed info. But as > I remember, the consensus suggestion was to index some > "impossible" value for those documents that lack a field. > For instance, say your field was "sometimes". I document > that had nothing to index for that field could get a value of > "ZZZZZZZZZZZZZ". > > Now your query is simple sometimes:ZZZZZZZZZZZZZ > > > Best > Erick > > On Tue, Sep 2, 2008 at 4:23 AM, Chris Lu <[EMAIL PROTECTED]> wrote: > > > 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: > > -category:* > > But it returns 0 document. I think "category:*" is basically match all, > so > > this "-category:*" doesn't work. > > > > Thanks! > > > > -- > > Chris Lu > > ------------------------- > > Instant Scalable Full-Text Search On Any Database/Application > > site: http://www.dbsight.net > > demo: http://search.dbsight.com > > Lucene Database Search in 3 minutes: > > > > > http://wiki.dbsight.com/index.php?title=Create_Lucene_Database_Search_in_3_minutes > > DBSight customer, a shopping comparison site, (anonymous per request) got > > 2.6 Million Euro funding! > > >
