You could use a copyField.
On 1/17/10 1:47 PM, "Koji Sekiguchi" <k...@r.email.ne.jp> wrote: > Pradeep Pujari wrote: >> how can I specify uniqueKey value in schema.xml as a concatenation of 3 >> columns. Like prod_id+attr_name+att_value? >> >> Thanks, >> Pradeep >> >> > Solr doesn't support it. You should concatenate them at client. > > Koji