| From: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Oleksandr Shulgin <oleksandr(dot)shulgin(at)zalando(dot)de>, Artur Zakirov <a(dot)zakirov(at)postgrespro(dot)ru>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Oleg Bartunov <obartunov(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, David Steele <david(at)pgmasters(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] [PATCH] Generic type subscripting |
| Date: | 2019-05-29 15:49:21 |
| Message-ID: | CA+q6zcWtU3Vopo3xbmyVazQBjhqj5CfAy7MTEuwmi46s2fq5AA@mail.gmail.com |
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| Lists: | pgsql-hackers |
Rebase after pg_indent. Besides, off the list there was a suggestion that this
could be useful to accept more than one data type as a key for subscripting.
E.g. for jsonb it probably makes sense to understand both a simple key name and
jsonpath:
jsonb['a'] and jsonb['$.a']
While to implement it can be technically relatively straightforward I guess, I
wonder if there is any opinion about how valuable it could be and what it
should looks like from the syntax point of view (since I believe a user needs
to specify which type needs to be used).
| Attachment | Content-Type | Size |
|---|---|---|
| v22-0004-Subscripting-documentation.patch | application/octet-stream | 20.0 KB |
| v22-0002-Subscripting-for-array.patch | application/octet-stream | 24.8 KB |
| v22-0001-Base-implementation-of-subscripting-mechanism.patch | application/octet-stream | 48.5 KB |
| v22-0003-Subscripting-for-jsonb.patch | application/octet-stream | 33.7 KB |
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