what does Select count(id) from t_calllog_calls where id IS NULL give you?
On Tue, 17 Sep 2002, Richard Unger wrote: > That would just give me 1994 for all 3 columns of output. What I want to know is >how many calls were longer than 5 seconds, how many were <= 5 seconds, and the total >number of calls. > > Cheers, > Rich > > > > -----Original Message----- > > From: Gelu Gogancea [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, September 17, 2002 12:08 PM > > To: Richard Unger; [EMAIL PROTECTED] > > Subject: Re: aggregate functions producing bad data > > > > > > Hi, > > I think you should try to use 0 instead of NULL > > > > Regards, > > > > Gelu > > _____________________________________________________ > > G.NET SOFTWARE COMPANY > > > > Permanent e-mail address : [EMAIL PROTECTED] > > [EMAIL PROTECTED] > > ----- Original Message ----- > > From: "Richard Unger" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Tuesday, September 17, 2002 9:59 PM > > Subject: aggregate functions producing bad data > > > > > > My query: > > > > SELECT > > count(id), > > count( IF(call_end - call_start > 5, id, NULL) ), > > count( IF(call_end - call_start <= 5, id, NULL) ) > > FROM > > t_calllog_calls; > > > > My result: > > > > 1994 > > 1956 > > 35 > > > > However, 1956 + 35 != 1994. > > > > Running MySQL 3.23.49-nt > > > > Cheers, > > Rich > > > > --------------------------------------------------------------------- > > 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 > > > > > > > > > > --------------------------------------------------------------------- > 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 > > --------------------------------------------------------------------- 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
