Kurt Roeckx <Q@ping.be> writes:
> This patch allows you to use IYYYY as format specifier to get the
> ISO year, the year correspondeing to the ISO week number (IW).
The purpose of to_char() as I understand it is to be 100% Oracle
compatible, not to invent new features at random. Is this duplicating
some Oracle functionality that was left out?
regards, tom lane