Opened issue #1099 for this
On Wed, Jul 6, 2011 at 9:42 PM, Shay Banon <email@example.com
No, there isn't an option for that, you can open an issue...
On Wednesday, July 6, 2011 at 2:21 PM, Hari Shankar wrote:
Is it possible to use a script field as the key_field in the terms_stats
facet? e.g, I want to use field1+field2 as the key_field.