On Mon, Mar 10, 2014 at 3:19 AM, Peter Geoghegan <pg@heroku.com> wrote:
> I don't have time to post that at the moment, but offhand I *think*
> your confusion may be due to the fact that the json_hash_ops opclass
> (as I call it) was previously consistent with the behavior of the
> other GIN opclass (the default). The problem is that they (well, at
> least the default GIN and GiST opclasses) were inconsistent with how
> the containment operator behaved in respect of jsonb array elements
> generally.
Sorry, I realize now that that must be incorrect. Still, please take a
look at the commit linked to.
--
Peter Geoghegan