| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Peter Geoghegan <pg(at)heroku(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: default opclass for jsonb (was Re: Call for GIST/GIN/SP-GIST opclass documentation) |
| Date: | 2014-04-09 15:56:33 |
| Message-ID: | 20140409155633.GW5822@eldon.alvh.no-ip.org |
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| Lists: | pgsql-docs pgsql-hackers |
Tom Lane wrote:
> > On Wed, Apr 9, 2014 at 2:37 AM, Heikki Linnakangas
> > <hlinnakangas(at)vmware(dot)com> wrote:
> >> Both of the operator classes are actually much less flexible than I'd like.
>
> > Maybe we should make *neither* of these the default opclass, and give
> > *neither* the name json_ops.
+1. I was thinking the same thing after reading Heikki's rant.
> One other point here is that non-default opclasses can't be used in
> UNIQUE/PRIMARY KEY/EXCLUDE constraints, because there's no place to
> specify an opclass name in those syntaxes. UNIQUE/PRIMARY KEY don't
> matter here since these aren't btree opclasses, but is there a
> use-case for EXCLUDE with any of the supported jsonb operators?
That sounds like an oversight that could better be fixed in EXCLUDE, no?
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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