Re: SQL/JSON in PostgreSQL

From: Peter van Hardenberg <pvh(at)pvh(dot)ca>
To: "Sven R(dot) Kunze" <srkunze(at)mail(dot)de>
Cc: Andres Freund <andres(at)anarazel(dot)de>, Oleg Bartunov <obartunov(at)gmail(dot)com>, David Steele <david(at)pgmasters(dot)net>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>, Nikita Glukhov <n(dot)gluhov(at)postgrespro(dot)ru>, Teodor Sigaev <teodor(at)postgrespro(dot)ru>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, andrew Dunstan <andrew(at)dunslane(dot)net>
Subject: Re: SQL/JSON in PostgreSQL
Date: 2017-03-08 19:48:30
Message-ID: CABTbUpjoU6N9SDOM5T3mEgeanqs73mpA-gof1yAqGVkXxgKRAw@mail.gmail.com
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Small point of order: YAML is not strictly a super-set of JSON.

Editorializing slightly, I have not seen much interest in the world for
YAML support though I'd be interested in evidence to the contrary.

On Tue, Mar 7, 2017 at 1:43 PM, Sven R. Kunze <srkunze(at)mail(dot)de> wrote:

> Hi,
>
> about the datetime issue: as far as I know, JSON does not define a
> serialization format for dates and timestamps.
>
> On the other hand, YAML (as a superset of JSON) already supports a
> language-independent date(time) serialization format (
> http://yaml.org/type/timestamp.html)
>
> I haven't had a glance into the SQL/JSON standard yet and a quick search
> didn't reveal anything. However, reading your test case here
> https://github.com/postgrespro/sqljson/blob/5a8a241/src/
> test/regress/sql/sql_json.sql#L411 it seems as if you intend to parse all
> strings in the form of "YYYY-MM-DD" as dates. This is problematic in case a
> string happens to look like this but is not intended to be a date.
>
> Just for the sake of completeness: YAML solves this issue by omitting the
> quotation marks around the date string (just as JSON integers have no
> quotations marks around them).
>
> Regards,
> Sven
>
>
>
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--
Peter van Hardenberg
San Francisco, California
"Everything was beautiful, and nothing hurt."—Kurt Vonnegut

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