Simplemente es porque Mysql no las soporta
esto esta sacado de la Ayuda de MYSQL 4.0
1.8.4.6 Views
It is planned to implement views in MySQL Server around version 6.0.
Feature MySQL version
Subqueries 4.1
Foreign keys 5.1 (3.23 with InnoDB)
Views 6.0
Stored procedures 5.0
Triggers 5.1
Unions 4.0
Full outer join 5.1
Constraints 5.1
Cursors 5.0
R-trees 4.1 (for MyISAM tables)
Inherited tables Not planned
Extensible type system Not planned