| From: | "Sven R(dot) Kunze" <srkunze(at)mail(dot)de> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de>, Oleg Bartunov <obartunov(at)gmail(dot)com> |
| Cc: | 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: | 2017-03-07 21:43:16 |
| Message-ID: | 70d3d53c-4494-07fb-1118-5c63d5f6917e@mail.de |
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| Lists: | pgsql-hackers |
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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