anchor.diff:  
   function_spec
       : FUNCTION identifier ('(' parameter ( ',' parameter)* ')')?
  -      RETURN type_spec (DETERMINISTIC)? (RESULT_CACHE)? ';'
  +      RETURN type_spec (PIPELINED)? (DETERMINISTIC)? (RESULT_CACHE)? ';'
       ;
   
   package_obj_body
  
positive.code: drop_index
      : DROP INDEX index_name ';'
      ;
  
  grant_statement
      : GRANT
  
negative.code:         create_mv_refresh?
          (FOR UPDATE)?
          ( (DISABLE | ENABLE) QUERY REWRITE )?
          AS select_only_statement
          ';'
      ;
  
  