Syntax:
DROP VIEW [IF EXISTS]
    view_name [, view_name] ...
    [RESTRICT | CASCADE]

DROP VIEW removes one or more views. You must have the DROP privilege
for each view.

If any views named in the argument list do not exist, the statement
fails with an error indicating by name which nonexisting views it was
unable to drop, and no changes are made.

*Note*:

In MySQL 5.7 and earlier, DROP VIEW returns an error if any views named
in the argument list do not exist, but also drops all views in the list
that do exist. Due to the change in behavior in MySQL 8.0, a partially
completed DROP VIEW operation on a MySQL 5.7 master fails when
replicated on a MySQL 8.0 slave. To avoid this failure scenario, use IF
EXISTS syntax in DROP VIEW statements to prevent an error from
occurring for views that do not exist. For more information, see
https://dev.mysql.com/doc/refman/8.0/en/atomic-ddl.html.

The IF EXISTS clause prevents an error from occurring for views that
don't exist. When this clause is given, a NOTE is generated for each
nonexistent view. See [HELP SHOW WARNINGS].

RESTRICT and CASCADE, if given, are parsed and ignored.

URL: https://dev.mysql.com/doc/refman/8.0/en/drop-view.html

