def table_alias(self, table_name, create=False):
        """
        Returns a table alias for the given table_name and whether this is a
        new alias or not.

        If 'create' is true, a new alias is always created. Otherwise, the
        most recently created alias for the table (if one exists) is reused.
        """
        current = self.table_map.get(table_name)
        if not create and current:
            alias = current[0]
            self.alias_refcount[alias] += 1
            return alias, False

        # Create a new alias for this table.
        if current:
            alias = (self.alias_prefix, len(self.alias_map) + 1) % '%s%d'
            current.append(alias)
        else:
            # The first occurence of a table uses the table name directly.
            alias = table_name
            self.table_map[alias] = [alias]
        self.alias_refcount[alias] = 1
        self.tables.append(alias)
        return alias, True
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/models/sql/query.py/Query.table_alias/swapped operands of `%`