"PostgreSQL Bugs List" <[EMAIL PROTECTED]> writes:
> Frankly speaking I don`t know the adequate calendar ISO norm in detail, but
> the last days of year shouldn`t be counted as F_I_R_S_T week of that year. I
> expected PostgreSQL rather to return 2003-53-29.
You are mistaken.
The ISO week is defined as Mon-Sun where week 1 of a year is the week
containing the year's first Thursday. Don't ask me *why* it's defined
that way, but it is. 2004's first Thursday is Jan 1, so that week
extends from 2003-12-29 to 2004-01-04.
regards, tom lane
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