Okay, I've reviewed the online man page for date and time functions, and I've played with several likely candidates, and I am still having trouble subtracting two arbitrary Datetimes to get something that is useful. A simple subtraction yields the least useful thing possible: a modulo-100 difference of modulo-60 quantities. Other functions yield the proper answer, but not for a quantity of time that rolls over midnight, etc.
Surely, there are tons of payroll apps that subtract the punch-out from the punch-in to come up with a quantity of time? What is YOUR favourite way of coming up with a quantity of time as the difference between two arbitrary Datetimes? Did I overlook something simple? Do I need to convert the two to scalar integers first? -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
