: I am using SOLR 1.4.1. When I search for empty string in a string field, : q=tag_facet:"", it return documents with values in tag_facet.
I can't reproduce the behavior you are describing. when i query the Solr 1.4.1 example with the following URL... http://localhost:8983/solr/select/?q=id:%22%22 ...it returns no documents, because there are no documents with a value of "" indexed in the "id" string field. If you can reproduce the behavior you are describing, please open a bug and attach configs/data files that others can use to demonstrate the same behavior -- although if you can't reproduce in 3.x, then it sounds like whatever issue it may be (if any) has already been fixed. -Hoss
