i have some documents like this:
<doc>
<str name="navTitle"/>
<str name="title">Word 1</str>
</doc>
<doc>
<str name="navTitle">Word 2</str>
<str name="title">Word 3</str>
</doc>
and i will find all documents with an emtpy "navTitle" field! How is the lucene query for this?
I trying " navTitle:'' " and I trying " navTitle:' ' ", but the Solr Admin Panal find nothing. Whats wrong at the query?
In the SolrQuerySytax page they says that you can use the following query to find all empty queries.
-field:[* TO *] finds all documents without a value for field
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