Yes that must be it. Both columns are unsigned. Is there any way to accomplish this with one query with unsigned columns?
Otherwise I will have to fetch each column seperately (two queries) and then do the subtraction outside MySQL (in my C code). --- Victoria Reznichenko <[EMAIL PROTECTED]> wrote: > On Tuesday 04 March 2003 16:51, Jamie Jennings > wrote: > > > Hi. I've got two mediumint columns in a mysql > table, > > and I'm trying to subtract them like this: > > > > SELECT column1-column2 FROM table WHERE > > name='johndoe'; > > > > This works some of the time, however, I get weird > > results for negative numbers. For example, when > > column1=0 and column2=4995, I get: > > > > 18446744073709546621 > > > > when really the answer should be -4995. > > Is your columns defined as UNSIGNED? In this result > of substraction will be > unsigned too. > > > -- > For technical support contracts, goto > https://order.mysql.com/?ref=ensita > This email is sponsored by Ensita.net > http://www.ensita.net/ > __ ___ ___ ____ __ > / |/ /_ __/ __/ __ \/ / Victoria Reznichenko > / /|_/ / // /\ \/ /_/ / /__ > [EMAIL PROTECTED] > /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.net > <___/ www.mysql.com > > > > > > --------------------------------------------------------------------- > 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 > ______________________________________________________________________ Post your free ad now! http://personals.yahoo.ca --------------------------------------------------------------------- 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
