Hans,
Just like to_char( date, 'IW' ) refers to ISO Week, I'd like to see a
IYYYY for ISO-year, and I wondered whether anyone else was interested,
or whether I was missing then point. (IYYYY matches %G in Unix strftime).
I know `week' has different meanings in various cultures, there's even
weeks of 6 days (well, long ago)!
But there's only one ISO definition for week.
regards,
Joost
>>>>> "Hans" writes: > Date: Thu, 30 Jan 2003 15:15:14 +0100 > From: Hans-Jürgen Schönig <postgres@cybertec.at>
>To: joost@snow.nl, pgsql-bugs@postgresql.org > Subject: Re: [BUGS] year and weeknumbers (proposal included)
> Hi,
> Counting weeks is a very special things because it is not the same in > all countries. As far as I have been
toldPolish people count weeks not > the way Austrians do it.
> On my calendar it says that the first week of the year starts on January > 1st. As far as I remember other
countriessuch as Poland start to when > the first full week starts.
> Maybe we should verify and document this somewhere.
> Regards,
> Hans
> joost@snow.nl wrote:
>> hi, >> >> last year (2002) the date december 31st is in week 1 of 2003. >> >> it is not possible to get
thisout of a date-column using EXTRACT or >> to_char. >> to_char( '2002-12-31', 'WW' ) returns 1, and >>
to_char('2002-12-31', 'YYYY' ) returns 2002 (as expected)! >> >> the format for retrieving the year with respect
toweek-numbering >> could be something like IY, IYY, IYYY, IYYYY. >> >> to_char( '2002-12-31', 'IYYYY' )
returns2003. >> >> regards, >> >> Joost Helberg >> >>
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--
Joost Helberg
Technisch Directeur Snow BV http://snow.nl Tel 0418-653333 Fax 0418-653666
Voorzitter VOSN http://www.vosn.nl Tel 0418-653336 Fax 0418-653666
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