akitchen

        NSExpressionDescription *dateDescription = [[NSExpressionDescription alloc] init];
        [dateDescription setName:@"date"];
        [dateDescription setExpression:[NSExpression expressionForKeyPath:@"someKeyPath.date"]];
        [dateDescription setExpressionResultType:NSDateAttributeType];

        NSPropertyDescription *propertyDescription = [[fetchRequest.entity propertiesByName] objectForKey:@"propertyName"];

        [fetchRequest setResultType:NSDictionaryResultType];
        [fetchRequest setPropertiesToFetch:@[dateDescription, propertyDescription]];