That works perfectly. Thank you. -----Original Message----- From: Paul DuBois [mailto:[EMAIL PROTECTED] Sent: Saturday, June 28, 2003 2:42 PM To: Eric Kilgore; [EMAIL PROTECTED] Subject: Re: left join on more than one field
At 12:29 -0700 6/28/03, Eric Kilgore wrote: >Anyone know how to perform a left join by more than one field? > >I have several tables I'm working with. An example query is like this: > >SELECT tbl1.Name, tbl1.Location, tbl1.Case, tbl1.Class, tbl1.Type, >tbl3.Identity, tbl2.FileDate, tbl2.Status >FROM tbl2, tbl1 LEFT JOIN tbl3 ON tbl1.Case = tbl3.Case >WHERE tbl1.Case = tbl2.Case AND tbl1.Name LIKE '$Name%' > >This returns everything I need, except that it also returns rows in tbl3 >that I don't want (there can be multiple rows for the same Case). So I need >to limit by tbl1.Party = tbl3.Party as well. > >If I add this to my where clause I defeat the purpose of the left join for >the null entries in table 3 and I don't know how to create two left join >statements for the same table. I know this is possible with many different >tables but found no info on two fields from the same two tables. Add the condition to your ON clause: ON tbl1.Case = tel3.Case AND tbl1.Party = tbl3.Party > >Any help would be appreciated. > >Eric -- Paul DuBois, Senior Technical Writer Madison, Wisconsin, USA MySQL AB, www.mysql.com Are you MySQL certified? http://www.mysql.com/certification/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
