ALTER [ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}]
VIEW view_name [(column_list)]
AS select_statement
[WITH [CASCADED | LOCAL] CHECK OPTION]
该语句用于更改已有视图的定义。其语法与CREATE VIEW类似。请参见22.2节，“CREATE VIEW语法”。该语句需要具有针对视图的CREATE VIEW和DROP权限，也需要针对SELECT语句中引用的每一列的某些权限。
