You are testing nullity using equal, but you must use IS NULL to test against NULL values.
http://www.mysql.com/doc/C/o/Comparison_Operators.html On Tuesday 18 June 2002 15:11, Phoebe Bright wrote: > I am trying to list items in t1 (alias new) that are not in project so I > tried the query suggested on an earlier mail: > > select new.projectdesc,project.projectname > from t1 as new > left join project on new.projectdesc=project.projectname > where project.projectname=NULL > > | projectdesc | projectname | > > Number of Results: 0 > > > So I tried running without the where clause: > > select new.projectdesc,project.projectname > from t1 as new > left join project on new.projectdesc=project.projectname > > | projectdesc | projectname | > | > | | NULL | > | > | NULL | NULL | > | Area | NULL | > | Accounting | Accounting | > | Admin | NULL | > | Marketing | NULL | > | Management | NULL | > | Production | NULL | > | Research | NULL | > | Sales | NULL | > | Technical Development | NULL | > > Number of Results: 11 > > > Have I missed something obvious????? > > > --------------------------------------------------------------------- > 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 -- Joćo Paulo Vasconcellos Gerente de Tecnologia - NetCard Tel. 21 3852-9008 Ramal 31 [EMAIL PROTECTED] --------------------------------------------------------------------- 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
