Thank you for the reply Chris. Please find the sample query which is returning results even though id is not having any value as "" in SOLR 1.4.1
http://localhost/solr/online/select/?q=%28%20state%20%29^1.8%20AND%20%20%28%20%28id:%22%22%29%29%20AND%20%20%28%20%28content_type_s:%22Video%22%29^1.5%20%29 PS: id is multivalued=false. Any field with multivalued as false works like this {returning results on search of ""} in SOLR 1.4.1. But at the same time q=id:"" is not returning any results in SOLR 1.4.1. This problem happens when there is AND clause with id:"" -- View this message in context: http://lucene.472066.n3.nabble.com/Search-for-empty-string-in-1-4-1-vs-3-4-tp3358444p3375436.html Sent from the Solr - User mailing list archive at Nabble.com.