Hi Adrain,
Thank you for the explanation. I was trying to send some data to a
Javascript library worked with ISO dates. But you are correct I wanted
YYYY not IYYY, that totally sliped by me.
Thanks,
-Steve
On 11/30/2014 4:19 PM, Adrian Klaver wrote:
On 11/30/2014 01:05 PM, Stephen Woodbridge wrote:
Hi,
I am have a problem when I format a timestamp in that it is changing the
year. This can't be right, so either I don't understand or I have found
a nasty corner case bug.
This does not happen on all dates
select '2014-12-31 00:00:00'::timestamp without time zone,
to_char('2014-12-31 00:00:00'::timestamp without time zone,
'IYYY-MM-DD HH24:MI:SS');
"2014-12-31 00:00:00";"2015-12-31 00:00:00"
It appears that this also happens for all timestamps after "2014-12-28
23:59:59" to the end of the year and then "2015-01-01 00:00:00" is ok
again.
I have found this on 9.2 and 9.3.
"PostgreSQL 9.2.9 on x86_64-unknown-linux-gnu, compiled by gcc
(Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, 64-bit"
"PostgreSQL 9.3.5 on x86_64-unknown-linux-gnu, compiled by gcc
(Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, 64-bit"
Any thoughts on how to work around this?
Don't mix ISO and Gregorian fields:
http://www.postgresql.org/docs/9.1/static/functions-formatting.html
Attempting to construct a date using a mixture of ISO week and Gregorian
date fields is nonsensical, and will cause an error. In the context of
an ISO year, the concept of a "month" or "day of month" has no meaning.
In the context of a Gregorian year, the ISO week has no meaning. Users
should avoid mixing Gregorian and ISO date specifications.
hplc=> select '2014-12-31 00:00:00'::timestamp without time zone,
to_char('2014-12-31 00:00:00'::timestamp, 'YYYY-MM-DD HH24:MI:SS');
timestamp | to_char
---------------------+---------------------
2014-12-31 00:00:00 | 2014-12-31 00:00:00
Thanks,
-Steve
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