anchor.diff:      | SELF
       | SERIALIZABLE
       | SNAPSHOT
  +    | SPATIAL_WINDOW_MAX_CELLS
       | STATIC
       | STATS_STREAM
       | STDEV
  
positive.code:     : func_proc_name
      | RIGHT
      | LEFT
      ;
  
  // https://msdn.microsoft.com/en-us/library/ms187752.aspx
  
negative.code: MARK:                            M A R K;
  MAX:                             M A X;
  MIN:                             M I N;
  MIN_ACTIVE_ROWVERSION:           M I N '_' A C T I V E '_' R O W V E R S I O N;
  MODIFY:                          M O D I F Y;
  NEXT:                            N E X T;
  NAME:                            N A M E;
  