It is a very common algorithm. From memory it is implemenented in
Sqlite, for example.
[EMAIL PROTECTED] wrote:
can convert to seconds since start of epoch, do the arithmetic,
then convert back
Don't get you. It would be quite a calculation, with leap years etc.
RBS
On Sun, Dec 03, 2006 at 05:31:55PM +0000, RB Smissaert wrote:
Still have the problem though how to compare dates in SQLite when the
format
is the integer yyyymmdd. Maybe I will need some custom SQLite function.
What's difficult about comparing integers of the form yyyymmdd?
Comparing them is easy: normal integer comparison operators work just
fine.
Date arithmetic with yyyymmdd integers, OTOH, is more difficult; but you
can convert to seconds since start of epoch, do the arithmetic, then
convert back.
Nico
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