anchor.diff:   | K_VACUUM
    | K_VALUES
    | K_VIEW
  - | K_VIRTUAL
    | K_WHEN
    | K_WHERE
    | K_WITH
  
positive.code: K_VACUUM : V A C U U M;
  K_VALUES : V A L U E S;
  K_VIEW : V I E W;
  K_VIRTUAL : V I R T U A L;
  K_WHEN : W H E N;
  K_WHERE : W H E R E;
  K_WITH : W I T H;
  
negative.code:  ;
  
  view_name 
   : any_name
   ;
  
  