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 · 2008-07-14 13:04:32 +00:00 · 82e551cce4
commit 82e551cce4
parent 1efc1dc3c7
1 changed files with 7 additions and 0 deletions
--- a/relation.py
+++ b/relation.py
@ -81,6 +81,13 @@ class relation (object):
 		if fields[0].__class__ == list().__class__:
 			fields=fields[0]
 		
+		#Avoiding duplicated fields
+		fields1=[]
+		for i in fields:
+			if i not in fields1:
+				fields1.append(i)
+		fields=fields1
+		
 		ids=self.header.getFieldsId(fields)
 		
 		if len(ids)==0: