ClickHouse Cloud only

ALTER MASKING POLICY

修改已有的掩码策略。

语法：

ALTER MASKING POLICY [IF EXISTS] policy_name ON [database.]table
    [UPDATE column1 = expression1 [, column2 = expression2 ...]]
    [WHERE condition]
    [TO {role1 [, role2 ...] | ALL | ALL EXCEPT role1 [, role2 ...]}]
    [PRIORITY priority_number]

所有子句均为可选。仅会更新显式指定的子句。