In addition to what Amrit correctly stated, if you need to search on your id, especially range queries, I recommend to use a copy field and leave the id field, almost as default.
Cheers ----- --------------- Alessandro Benedetti Search Consultant, R&D Software Engineer, Director Sease Ltd. - www.sease.io -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html