anchor.diff:      ;
   
   create_tablespace
  -    : CREATE (BIGFILE|SMALLFILE)? 
  +    : CREATE (BIGFILE | SMALLFILE)? 
           ( permanent_tablespace_clause
           | temporary_tablespace_clause
           | undo_tablespace_clause
  
positive.code:         | BLOCKSIZE size_clause
          | logging_clause
          | FORCE LOGGING
          | (ONLINE|OFFLINE)
          | ENCRYPTION tablespace_encryption_spec
          | DEFAULT //TODO table_compression? storage_clause?
          | extent_management_clause
  
negative.code:     ;
  
  autoextend_clause
      : AUTOEXTEND (OFF | ON (NEXT size_clause)? maxsize_clause? )
      ;
  
  maxsize_clause
      : MAXSIZE (UNLIMITED | size_clause)
      ;
  
  create_table
  