You can also use a "Field Mutating Update Processor" to do a "smart" copy of
a multi-valued field to a sortable single-valued field.
See:
http://wiki.apache.org/solr/UpdateRequestProcessor#Field_Mutating_Update_Processors
Such as using the maximum value via MaxFieldValueUpdateProcessorFactory.
See:
http://lucene.apache.org/solr/api-4_0_0-BETA/org/apache/solr/update/processor/MaxFieldValueUpdateProcessorFactory.html
Which value of a multi-valued field do you wish to sort by?
-- Jack Krupansky
-----Original Message-----
From: Uwe Reh
Sent: Thursday, August 30, 2012 1:57 AM
To: solr-user@lucene.apache.org
Subject: Sorting on mutivalued fields still impossible?
Hi,
just to be sure.
There is still no way to sort by multivalued fields?
"...&sort=max(datefield) desc&...."
There is no smarter option, than creating additional singelevalued
fields just for sorting?
"eg. datafield_max and datefield_min"
Uwe
