Database: cre_Students_Information_Systems
Question: What is the most common student address type? Give me the code and description of the address type.
SQL:
SELECT T1.address_type_code ,  T2.address_type_description FROM Students_Addresses AS T1 JOIN Ref_Address_Types AS T2 WHERE T1.address_type_code  =  T2.address_type_code GROUP BY T1.address_type_code ORDER BY count(*) DESC LIMIT 1