* make_join_rel()
* populate_joinrel_with_paths()
*
- * Portions Copyright (c) 2013-2020, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
+ * Portions Copyright (c) 2013-2021, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*