Re: pgsql: Add template for adaptive radix tree

John Naylor <john.naylor@postgresql.org> writes:
> This implements a radix tree data structure based on the design in
> "The Adaptive Radix Tree: ARTful Indexing for Main-Memory Databases"
> by Viktor Leis, Alfons Kemper, and ThomasNeumann, 2013.

Hm ... do we know that this is not patent-encumbered technology?
Commits citing such specific prior art make me nervous.

            regards, tom lane