Bug #45251 Backup fails if base table is missing for views

Description:
create database db2;
create table db2.t2(id int);
create view db2.v2 as select * from db2.t2;
backup database db2 to 'db2a.bak';
drop table db2.t2;
backup database db2 to 'db2b.bak';

At this point backup will fail because of missing base table.

How to repeat:
mysql> create database db2;
Query OK, 1 row affected (0.00 sec)

mysql> create table db2.t2(id int);
Query OK, 0 rows affected (0.00 sec)

mysql> create view db2.v2 as select * from db2.t2;
Query OK, 0 rows affected (0.00 sec)

mysql> backup database db2 to 'db2a.bak';
+-----------+
| backup_id |
+-----------+
| 273       |
+-----------+
1 row in set (0.08 sec)

mysql> drop table db2.t2;
Query OK, 0 rows affected (0.00 sec)

mysql> backup database db2 to 'db2b.bak';
ERROR 1698 (HY000): Failed to add view `db2`.`v2` to the catalog

Please see BUG#34902. The fix for this bug is only partly done. In future, we should be able to backup databases even if dependencies of objects are missing.

Thank you for the report.

It is actually duplicate of bug #44283