I see this interesting line in the wiki page LargeIndexes http://wiki.apache.org/solr/LargeIndexes (sorting section towards the bottom)
Using _val:ord(field) as a search term will sort the results without incurring the memory cost. I'd like to know what this means, but I'm having a bit of trouble parsing it.... What is _val:ord(field) exactly? Does this just mean that I should pass in the ordinal of the field instead of the fieldname in the query? Which portion of the memory cost is being avoided doing this?
