| From: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
|---|---|
| To: | Nikita Glukhov <n(dot)gluhov(at)postgrespro(dot)ru> |
| Cc: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Oleg Bartunov <obartunov(at)postgrespro(dot)ru>, Michael Paquier <michael(at)paquier(dot)xyz>, Stas Kelvich <s(dot)kelvich(at)postgrespro(dot)ru>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, David Steele <david(at)pgmasters(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Subject: | Re: jsonpath |
| Date: | 2019-03-14 09:07:13 |
| Message-ID: | CAPpHfdsLuSAGHbn06Qq83=XCDhW8RqFe8tFeq+rYhiNWD=bzFA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Mar 10, 2019 at 1:51 PM Alexander Korotkov
<a(dot)korotkov(at)postgrespro(dot)ru> wrote:
> On Wed, Mar 6, 2019 at 12:40 AM Nikita Glukhov <n(dot)gluhov(at)postgrespro(dot)ru> wrote:
> > Attached 36th version of the patches.
>
> Thank yo for the revision!
>
> In the attached revision following changes are made:
>
> > "unknown" refers here to ordinary three-valued logical Unknown, which is
> > represented in SQL by NULL.
> >
> > JSON path expressions return sequences of SQL/JSON items, which are defined by
> > SQL/JSON data model. But JSON path predicates (logical expressions), which are
> > used in filters, return three-valued logical values: False, True, or Unknown.
>
> * I've added short explanation of this to the documentation.
> * Removed no longer present data structures from typedefs.list of the
> first patch.
> * Moved GIN support patch to number 3. Seems to be well-isolated and
> not very complex patch. I propose to consider this to 12 too. I
> added high-level comment there, commit message and made some code
> beautification.
I think patches 1 and 2 are in committable shape (I reached Tomas
off-list, he doesn't have more notes regarding them). While patch 3
requires more review.
I'm going to push 1 and 2 if no objections.
------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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