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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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.
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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.