LtWorf 82e551cce4 preventing duplicated fields in projection ... git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@4 014f5005-505e-4b48-8d0a-63407b615a7c		2008-07-14 13:04:32 +00:00
relation.py	preventing duplicated fields in projection	2008-07-14 13:04:32 +00:00