Thanks Kranti Parisa ! I have 2 core :
products(id, product_name, category_id ); categories(category_id, category_name); query similar SQL: SELECT p.* from Products AS p Inner join Categories AS c ON p.category_id = c.category_id Order by c.category_name asc; Purpose sorting by category_name, but join solr not support to use sort. If custom solr, how do it ? Thank a lot of ! -- View this message in context: http://lucene.472066.n3.nabble.com/Join-solr-tp4132615p4132933.html Sent from the Solr - User mailing list archive at Nabble.com.