On Fri, Nov 1, 2013 at 6:31 AM, Dimitri Fontaine <dimi...@2ndquadrant.fr>wrote:
> Hi, > > Here's an idea: when a user ask for an Hash Index transparently build a > BTree index over an hash function instead. > Could something be added to the planner so that you can just build a btree index on a hash expression, and have the planner automatically realize it can used for an equality query because if a=b, then md5(a)=md5(b), at least for some data types? A general ability to recognize things like that seems like it might have other uses as well. Cheers, Jeff
