2003年 7月 12日 土曜日 10:55、Nils Valentin さんは書きました: > Hi Bruce; > > Thank you for the reply. > > I passed the core exam but obviously its not enough ;-) Live and learn ;-)
Aeeh thats was supposed to be ... life and learn.. Perhaps somebody knows a good spellchecker for logical mistakes ?? ;-) That would have immediately popped up on my screen ;-) Best regards Nils Valentin Tokyo/Japan > > Thank you very much for the reply. > > Best regards > > Nils Valentin > > 2003年 7月 12日 土曜日 10:20、Bruce Feist さんは書きました: > > Nils Valentin wrote: > > >I would like to list all courses with have less than lets say 10 > > > participants. Does anybody know how I would have to modify the code > > > below to get this to work ? > > > > > >schedule_id is the course itself > > > > > > > > >SELECT schedule_id,count(schedule_id) FROM attendance WHERE > > >count(schedule_id)<10 GROUP BY schedule_id ; > > > > > >My problem is that I would need to use the count function actually > > > within the WHERE (clause which is not allowed). > > > > That's precisely why HAVING exists. > > > > SELECT schedule_id,count(schedule_id) > > FROM attendance > > HAVING count(schedule_id) <10 > > GROUP BY schedule_id ; > > > > Bruce Feist -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
