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From: Peter Geoghegan <[email protected]>
To: Tom Lane <[email protected]>
Cc: David E. Wheeler <[email protected]>
Cc: Bruce Momjian <[email protected]>
Cc: Greg Stark <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Heikki Linnakangas <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: default opclass for jsonb (was Re: Call for GIST/GIN/SP-GIST opclass documentation)
Date: Tue, 6 May 2014 15:29:40 -0700
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On Tue, May 6, 2014 at 3:20 PM, Tom Lane <[email protected]> wrote:
> I wonder whether the most effective use of time at this point
> wouldn't be to fix jsonb_ops to do that, rather than arguing about
> what to rename it to.  If it didn't have the failure-for-long-strings
> problem I doubt anybody would be unhappy about making it the default.

I would expect the selectivity of keys on their own to be very low
with idiomatic usage of jsonb. Typically, every row in a table will
have almost the same keys. The current default opclass makes more
sense for when that isn't the case.

-- 
Peter Geoghegan


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