Thanks, Paul. ;) ~rob
> -----Original Message----- > From: Paul DuBois [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, January 09, 2002 8:22 PM > To: [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: DATES & Optimization > > > At 9:02 -0600 1/9/02, Robert L. Yelvington wrote: > >Two quick qux for the gurus on the list! > > > >1. If I needed to do date calculations based upon a TIME STAMP > field, what's > >the most efficient way to accomplish this with respect to data > types (field > >types...I already understand how to use the DATE functions and > am aware of > >locale time and UNIX time trappings)? For example, someone signs up on a > >mailing list via mysql data base, and then I want to know how many people > >have signed up in Jan, 2001 or March, 1999 or Jan, 2002? OR, another > > Jan, 2001: > SELECT COUNT(*) FROM tbl_name WERE MONTH(t) = 1 AND YEAR(t) = 2001; > Others are similar. > > >example, someone signs up and I want to calculate 4 ninety day > cycles with a > >reminder sixty days from sign up, so that if I signed up on Jan > 1, 2002 then > >on Mar 1, 2002, I'd like to send notification that their account needs > >maintenance by April 1, 2002...kinda like a billing system. > > Use DATE_ADD(). --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
