Syntax
------ 
ALTER
 [ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}]
 [DEFINER = { user | CURRENT_USER }]
 [SQL SECURITY { DEFINER | INVOKER }]
 VIEW view_name [(column_list)]
 AS select_statement
 [WITH [CASCADED | LOCAL] CHECK OPTION]
 
Description
----------- 
This statement changes the definition of a view, which must
exist. The
syntax is similar to that for CREATE VIEW and the effect is
the same
as for CREATE OR REPLACE VIEW if the view exists. This
statement
requires the CREATE VIEW and DROP privileges for the view,
and some
privilege for each column referred to in the SELECT
statement. As of
MariaDB 5.1.23, ALTER VIEW is allowed only to the definer or
users with
the SUPER privilege.
 
Example
 
ALTER VIEW v AS SELECT a, a*3 AS a2 FROM t;
 


URL: https://mariadb.com/kb/en/alter-view/