Query to get A-Z index

[Priya Rodrigues]

Is there a way to get the A-Z index from a field

eg. if the field name contains Alpha, Pogo, Zoro,

it should return A, P, Z

Found something similar here
http://stackoverflow.com/questions/8974299/solr-query-by-range-of-name

But is there a way to do this without copyField?

Thanks,
Priya