RE: [PHP-DB] Update Query Help...

> -----Original Message----- > From: NIPP, SCOTT V (SBCSI) [mailto:sn4265@sbc.com] > Sent: 10 December 2002 20:02 > > I have definitely isolated the problem. If I change > the column name > that the match is being performed on from 'id-sys' to > 'id_sys' I can execute > the query without having to worry about quoting the column name and > everything works. I think that I am just going to leave the > column name > changed and take this as a lesson never to use '-' in a > column name again. Well, if you stop to think about this for a second, it may occur to you to wonder how MySQL is supposed to tell the difference between the column name id-sys, and the expression id-sys (i.e. the value of the id column minus the value of the sys column). The answer is that you have to demarcate a column name like this that is ambiguous -- and in MySQL that's with ` back ticks. (Other databases have other means of doing this -- or just restrict column names to avoid the issue!) Cheers! Mike --------------------------------------------------------------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning & Information Services, JG125, James Graham Building, Leeds Metropolitan University, Beckett Park, LEEDS, LS6 3QS, United Kingdom Email: m.ford@lmu.ac.uk Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211