(self)
return self.name, self.table_name, str(self.filters), str(self.group_by)
Override this to exclude the key so that all the columns get added to the same
        query meta instance (otherwise we'll be doing one query per column)
Override this to exclude the key so that all the columns get added to the same
        query meta instance (otherwise we'll be doing one query per column)
Override this to exclude the key so that all the columns get added to the same query meta instance ( otherwise we ll be doing one query per column )
def column_key(self):
        """
        Override this to exclude the key so that all the columns get added to the same
        query meta instance (otherwise we'll be doing one query per column)
        """
        return self.name, self.table_name, str(self.filters), str(self.group_by)
def column_key ( self ) : return self . name , self . table_name , str ( self . filters ) , str ( self . group_by )