CREATE USER

CREATE USER 语句用于创建带有指定密码的新用户。和 MySQL 一样,在 TiDB 权限系统中,用户是用户名和用户名所连接主机的组合。因此,可创建一个用户 'newuser2'@'192.168.1.1',使其只能通过 IP 地址 192.168.1.1 进行连接。相同的用户名从不同主机登录时可能会拥有不同的权限。

语法图

CreateUserStmt
CREATEUSERIfNotExistsUserSpecListRequireClauseOptConnectionOptionsPasswordOptionLockOptionAttributeOptionResourceGroupNameOption
IfNotExists
IFNOTEXISTS
UserSpecList
UserSpec,
UserSpec
UsernameAuthOption
AuthOption
IDENTIFIEDBYAuthStringPASSWORDHashStringWITHStringNameBYAuthStringASHashString
StringName
stringLitIdentifier
PasswordOption
PASSWORDEXPIREDEFAULTNEVERINTERVALNDAYPASSWORDHISTORYDEFAULTNPASSWORDREUSEINTERVALDEFAULTNDAYFAILED_LOGIN_ATTEMPTSNPASSWORD_LOCK_TIMENUNBOUNDED
LockOption
ACCOUNTLOCKACCOUNTUNLOCK
AttributeOption
COMMENTCommentStringATTRIBUTEAttributeString
ResourceGroupNameOption
RESOURCEGROUPIdentifier

示例

创建一个密码为 newuserpassword 的用户。

CREATE USER 'newuser' IDENTIFIED BY 'newuserpassword';
Query OK, 1 row affected (0.04 sec)

创建一个只能在 192.168.1.1 登录的用户,密码为 newuserpassword

CREATE USER 'newuser2'@'192.168.1.1' IDENTIFIED BY 'newuserpassword';
Query OK, 1 row affected (0.02 sec)

创建一个要求在登录时使用 TLS 连接的用户。

CREATE USER 'newuser3'@'%' IDENTIFIED BY 'newuserpassword' REQUIRE SSL;
Query OK, 1 row affected (0.02 sec)

创建一个要求在登录时提供指定客户端证书的用户。

CREATE USER 'newuser4'@'%' IDENTIFIED BY 'newuserpassword' REQUIRE ISSUER '/C=US/ST=California/L=San Francisco/O=PingCAP';
Query OK, 1 row affected (0.02 sec)

创建一个初始状态下被锁住的用户。

CREATE USER 'newuser5'@'%' ACCOUNT LOCK;
Query OK, 1 row affected (0.02 sec)

创建一个带注释的用户。

CREATE USER 'newuser6'@'%' COMMENT 'This user is created only for test'; SELECT * FROM information_schema.user_attributes;
+-----------+------+---------------------------------------------------+ | USER | HOST | ATTRIBUTE | +-----------+------+---------------------------------------------------+ | newuser6 | % | {"comment": "This user is created only for test"} | +-----------+------+---------------------------------------------------+ 1 rows in set (0.00 sec)

创建一个具有邮箱 (email) 属性的用户。

CREATE USER 'newuser7'@'%' ATTRIBUTE '{"email": "user@pingcap.com"}'; SELECT * FROM information_schema.user_attributes;
+-----------+------+---------------------------------------------------+ | USER | HOST | ATTRIBUTE | +-----------+------+---------------------------------------------------+ | newuser7 | % | {"email": "user@pingcap.com"} | +-----------+------+---------------------------------------------------+ 1 rows in set (0.00 sec)

创建一个禁止重复使用最近 5 次密码的用户。

CREATE USER 'newuser8'@'%' PASSWORD HISTORY 5;
Query OK, 1 row affected (0.02 sec)

创建一个密码已经手动过期的用户。

CREATE USER 'newuser9'@'%' PASSWORD EXPIRE;
Query OK, 1 row affected (0.02 sec)

创建一个使用资源组 rg1 的用户:

CREATE USER 'newuser7'@'%' RESOURCE GROUP rg1; SELECT USER, HOST, USER_ATTRIBUTES FROM MYSQL.USER WHERE USER='newuser7';
+-----------+------+---------------------------------------------------+ | USER | HOST | USER_ATTRIBUTES | +-----------+------+---------------------------------------------------+ | newuser7 | % | {"resource_group": "rg1"} | +-----------+------+---------------------------------------------------+ 1 rows in set (0.00 sec)

MySQL 兼容性

  • TiDB 不支持 WITH MAX_QUERIES_PER_HOURWITH MAX_UPDATES_PER_HOURWITH MAX_USER_CONNECTIONSCREATE 选项。
  • TiDB 不支持 DEFAULT ROLE 选项。
  • 对于 TiDB 尚不支持的 CREATE 选项。这些选项可被解析,但会被忽略。

另请参阅

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