Re: Find all the dates in the calendar week?

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu>
Cc: Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>, Andrew Snow <als(at)fl(dot)net(dot)au>, Stephane Bortzmeyer <bortzmeyer(at)pasteur(dot)fr>, "Pgsql-General(at)Postgresql(dot) Org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: Find all the dates in the calendar week?
Date: 2000-07-07 16:16:03
Message-ID: Pine.LNX.4.21.0007070101410.4191-100000@localhost.localdomain
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Thomas Lockhart writes:

> I just didn't implement the corresponding "year" code at least partly
> because I wasn't sure what to call it. 'iyear' seems like a pretty good
> choice, or should it be 'isoyear'? 'year' is already used, obviously,
> and if 'iyear' is chosen then perhaps I should change 'week' to 'iweek'
> for consistancy. Comments?

Then we should probably rather change 'year' to something else. Standards
should be preferred. Out of curiosity, what's the difference between
ISO-year and proprietary-year? I can see the week-of-year thing, but the
year of a year is always constant, no?

Btw., isn't there an SQL EXTRACT function for all of this? Shouldn't we be
thinking in terms of that?

IMHO, the "Oracle-week" is pretty brain-dead. You can get that from
day-of-year % 7. The next thing they tell us is that the month of the year
is really day-of-year % 30.

--
Peter Eisentraut Sernanders väg 10:115
peter_e(at)gmx(dot)net 75262 Uppsala
http://yi.org/peter-e/ Sweden

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