anchor.diff:          create_mv_refresh?
           (FOR UPDATE)?
           ( (DISABLE | ENABLE) QUERY REWRITE )?
  -        AS subquery
  +        AS select_only_statement
           ';'
       ;
   
  
positive.code: 
  tableview_name
      : identifier ('.' id_expression)?
            ('@' link_name | /*TODO{!(input.LA(2) == BY)}?*/ partition_extension_clause)?
      | xmltable outer_join_sign?
      ;
  
  
negative.code:     ;
  
  create_view
      : CREATE (OR REPLACE)? (OR? FORCE)? EDITIONABLE? EDITIONING? VIEW
        tableview_name view_options?
        AS select_only_statement subquery_restriction_clause?
      ;
  
  view_options
  