It's easy to add support of other operations to hash_ops, so it will
be on par with default GIN opclass, at the price of bigger size. We
can add it later to contrib/jsonbext.
I'm mostly worrying about changing semantics of scalar.
On Sun, Mar 23, 2014 at 4:27 AM, Peter Geoghegan <pg@heroku.com> wrote:
> On Sat, Mar 22, 2014 at 5:22 PM, Bruce Momjian <bruce@momjian.us> wrote:
>> What did you decide about hashing values in indexes vs. putting them in
>> literally?
>
> There are two GIN opclasses supplied. There is a default, which
> supports more operators (various "existence" operators - see the
> documentation). There is an alternative called jsonb_hash_ops that
> only supports containment, and performs considerably better than the
> default. Containment *is* the compelling operator to support, though -
> you can do rather a lot with it. This must be what you're referring
> to, since I recall you blogged about the response it got at pgConf.EU.
> Both are available.
>
>
> --
> Peter Geoghegan
>
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