Обсуждение: Datetime formatting
The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/14/datatype-datetime.html Description: The latest ISO 8601-1:2019 standard requires the "T" character as the separator in text representations of datetimes. RFC 3339 is more flexible and allows the space between the date and time. So technically, SELECT CAST('2021-02-13 06:00:00-06'::timestamptz AS TEXT); ------> 2021-02-13 06:00:00-06 is no longer considered valid under the latest edition, it would have to be 2021-02-13T06:00:00-06 I don't have access to the actual standard, but https://ijmacd.github.io/rfc3339-iso8601/ seems to summarize it quite well, and from what I could find publicly available. Might want to make a note that the current behavior does not match the latest standard, but does match previous editions and/or RFC 3339. Or update the actual database behavior to match the new standard so no documentation changes are required.
Page: https://www.postgresql.org/docs/14/datatype-datetime.html
Might want to make a note that the current behavior does not match the
latest standard, but does match previous editions and/or RFC 3339.
Sigh, I should just go home now…
From: David G. Johnston <david.g.johnston@gmail.com>
Sent: Thursday, January 27, 2022 10:26 AM
To: Kruus, Robert SPSA <Robert.Kruus@gov.sk.ca>; Pg Docs <pgsql-docs@lists.postgresql.org>
Subject: Re: Datetime formatting
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On Thu, Jan 27, 2022 at 9:13 AM PG Doc comments form <noreply@postgresql.org> wrote:
Page: https://www.postgresql.org/docs/14/datatype-datetime.html
Might want to make a note that the current behavior does not match the
latest standard, but does match previous editions and/or RFC 3339.
We have such a note - it even gets printed in a big blue box.
"""
ISO 8601 specifies the use of uppercase letter T to separate the date and time. PostgreSQL accepts that format on input, but on output it uses a space rather than T, as shown above. This is for readability and for consistency with RFC 3339 as well as some other database systems.
"""
David J.