Task: Text to Code
Input (English): SQL: SELECT property_type_description FROM Ref_Property_Types
Feedback: You need to mention code of property type.
Output (English): SELECT T2.property_type_description FROM Properties AS T1 JOIN Ref_Property_Types AS T2 ON T1.property_type_code  =  T2.property_type_code GROUP BY T1.property_type_code