| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> | 
|---|---|
| To: | Peter Geoghegan <pg(at)heroku(dot)com> | 
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> | 
| Subject: | Re: Further issues with jsonb semantics, documentation | 
| Date: | 2015-06-04 19:16:15 | 
| Message-ID: | 20150604191615.GL133018@postgresql.org | 
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| Thread: | |
| Lists: | pgsql-hackers | 
I'm just skimming here, but if a jsonb_path type is being proposed,
perhaps it would be better not to have operators that take text or
text[] as second argument.  We can provide that functionality with just
functions.  For example, it will be confusing to have 
jsonb 'some json value' - '{foo,bar}'
operate too differently from
jsonb 'some json value' - json_path '{foo,bar}'
And it will be a nasty regression to have 9.5 allow
jsonb 'some json value' - '{foo,bar}'
and then have 9.6 error out with "ambiguous operator" when the json_path
thing is added.
-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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