ALTER PASSWORD POLICY

修改 TiDB Cloud Lake 中现有的密码策略。

语法

-- Modify existing password policy attributes
ALTER PASSWORD POLICY [ IF EXISTS ] <name> SET
    [ PASSWORD_MIN_LENGTH = <number> ]
    [ PASSWORD_MAX_LENGTH = <number> ]
    [ PASSWORD_MIN_UPPER_CASE_CHARS = <number> ]
    [ PASSWORD_MIN_LOWER_CASE_CHARS = <number> ]
    [ PASSWORD_MIN_NUMERIC_CHARS = <number> ]
    [ PASSWORD_MIN_SPECIAL_CHARS = <number> ]
    [ PASSWORD_MIN_AGE_DAYS = <number> ]
    [ PASSWORD_MAX_AGE_DAYS = <number> ]
    [ PASSWORD_MAX_RETRIES = <number> ]
    [ PASSWORD_LOCKOUT_TIME_MINS = <number> ]
    [ PASSWORD_HISTORY = <number> ]
    [ COMMENT = '<comment>' ]

-- Remove specific password policy attributes
ALTER PASSWORD POLICY [ IF EXISTS ] <name> UNSET
    [ PASSWORD_MIN_LENGTH ]
    [ PASSWORD_MAX_LENGTH ]
    [ PASSWORD_MIN_UPPER_CASE_CHARS ]
    [ PASSWORD_MIN_LOWER_CASE_CHARS ]
    [ PASSWORD_MIN_NUMERIC_CHARS ]
    [ PASSWORD_MIN_SPECIAL_CHARS ]
    [ PASSWORD_MIN_AGE_DAYS ]
    [ PASSWORD_MAX_AGE_DAYS ]
    [ PASSWORD_MAX_RETRIES ]
    [ PASSWORD_LOCKOUT_TIME_MINS ]
    [ PASSWORD_HISTORY ]
    [ COMMENT ]

有关密码策略属性的详细说明，请参见密码策略属性。

示例

以下示例创建了一个名为 SecureLogin 的密码策略，将密码最小长度要求设置为 10 个字符，随后将其修改为允许密码长度在 10 到 16 个字符之间：

CREATE PASSWORD POLICY SecureLogin
    PASSWORD_MIN_LENGTH = 10;

ALTER PASSWORD POLICY SecureLogin SET
    PASSWORD_MIN_LENGTH = 10
    PASSWORD_MAX_LENGTH = 16;