with fs

as

(

    select database_id, type, size * 8.0 / 1024 size

    from sys.master_files

)

select 

    name,

    (select   cast(round(sum(size),2)   as   numeric(15,2))  from fs where type = 0 and fs.database_id = db.database_id) DataFileSizeMB,

    (select cast(round(sum(size),2)   as   numeric(15,2))  from fs where type = 1 and fs.database_id = db.database_id) LogFileSizeMB

from sys.databases db

order by 2 desc;