A Stored Procedure for querying the space usage of all tables in a database

I don't know if there are any better methods to get it.

 1   Create     Procedure  Rochelle sptablespaceused
  2      As  
  3     Set  Nocount  On  
  4  
  5     Declare     @ Result     Table  
  6   (
  7   Tablename  Varchar  (  64  )
 8   ,  [  Rows  ]     Int  
  9   , Reserved  Varchar  (  64  )
  10   ,  [ Data  ]     Varchar  (  64  )
  11   , Index_size  Varchar  (  64  )
  12   , Unused  Varchar  ( 64  )
  13   )
  14   
  15     Declare     @ Tablename     Varchar  (  64  )
  16  
  17     Declare  Curtable  Cursor  Fast_forward  For  
  18     Select     [  Name  ]     From SYS. Tables  Where     [  Name  ]     Not     Like     '  Databaseschema %  '  
  19   
  20    Open  Curtable
  21     Fetch     Next     From  Curtable  Into     @ Tablename  
  22     While    @ Fetch_status     =     0  
  23     Begin  
  24     Insert     Into    @ Result  
  25     Exec  Sp_spaceused  @ Tablename  
  26     Fetch     Next     From  Curtable  Into    @ Tablename  
  27     End  
  28     Close  Curtable
  29     Deallocate  Curtable
  30   
  31    Select     *  
  32     From     @ Result  
  33     Order     By     Cast (  Left  (  [  Data  ]  ,  Len  (  [  Data  ]  )  -  2  )  As    Int  )  Desc  
  34   
  35     Set  Nocount  Off