On Mon, Mar 10, 2014 at 3:00 AM, Alexander Korotkov <aekorot...@gmail.com> wrote: > I din't get comment about "leftmost" element. There is absolutely no > distinguish between array elements. All elements are extracted into same > keys independent of their indexes. It seems to have no change since I wrote > hstore_hash_ops. Could you share test case to illustrate what you mean?
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. Here is the commit on our feature branch where I fixed the problem for the default GIN opclass: https://github.com/feodor/postgres/commit/6f5e4fe9fc34f9512919b1c8b6a54952ab288640s If it doesn't explain the problem, you may still wish to comment on the correctness of this fix. I am still waiting on feedback from Oleg and Teodor. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
