MySQL - cannot examine view definition - Error getting DDL for object - No database selected
No database selected error message means that no database is selected as current. Specify default database in my.ini, connection definition, or execute USE dbname; as the very first query in the connection.

why no other view required a default schema be defined, and why is a default schema required at all? – Roy Hinkley

Default scheme needed when tablename without database name is specified somewhere in SQL text.
For example, you execute SHOW CREATE TABLE my_view - but without default datatbase set the server does not know where it must take this view from (and even does this is a table or a view).