check the access plan - if there are good predicates on both tables and indexes for these predicates.. then it is not very important. only if tablescans are involved..
Best Regards, Guy Przytula
Database Software Consultant
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They are the same. DB2 rewrites a Right outer to Left outer. So, its up to you, but most times it is easier for people to understand the concept of left outer. If you were to find a difference in access plan please open a PMR with IBM as they should be the same.