Raise exception for duplicated attrs in projection

Rather than ignoring them, raise an exception
2015-06-06 14:15:47 +07:00 · 2015-06-06 14:15:47 +07:00 · b12ea8d27a
parent bbc2855cc5
commit b12ea8d27a
1 changed files with 2 additions and 5 deletions
--- a/relational/relation.py
+++ b/relational/relation.py
@ -153,11 +153,8 @@ class relation (object):
            attributes = attributes[0]

        # Avoiding duplicated attributes
-        attributes1 = []
-        for i in attributes:
-            if i not in attributes1:
-                attributes1.append(i)
-        attributes = attributes1
+        if len(set(attributes)) != len (attributes):
+            raise Exception('Duplicated attributes in projection')

        ids = self.header.getAttributesId(attributes)