Hi,
Why did you use upper case? What happens when you use : sort=sum(... On Wednesday, July 2, 2014 6:23 PM, rachun <rachun.c...@gmail.com> wrote: Gora, firstly I would like thank you for your quick response. .../select?q=MacBook&sort=SUM(base_score, score)+desc&wt=json&indent=true I tried that but it didn't work and I got this error message "error":{ "msg":"Can't determine a Sort Order (asc or desc) in sort spec 'SUM(base_score, score) desc', pos=15", "code":400}} Best Regards, Chun -- View this message in context: http://lucene.472066.n3.nabble.com/Customise-score-tp4145214p4145216.html Sent from the Solr - User mailing list archive at Nabble.com.