On Sep 8, 2005, at 5:45 PM, Marcus Welz wrote:
If "SELECT SUM(amt)" means "How much did I sell?" Then the "NULL" should mean, "You didn't sell anything.", no?
no... NULL means, "I don't have any data to answer that question" which is very different from "I sold $0 worth of things" or "I didn't sell anything."
-- Puneet Kishor
