Skip to content

Latest commit

 

History

History
169 lines (121 loc) · 5.16 KB

sql-statement-create-user.md

File metadata and controls

169 lines (121 loc) · 5.16 KB
Raw
title summary aliases
CREATE USER | TiDB SQL Statement Reference
An overview of the usage of CREATE USER for the TiDB database.
/docs/dev/sql-statements/sql-statement-create-user/
/docs/dev/reference/sql/statements/create-user/

CREATE USER

This statement creates a new user, specified with a password. In the MySQL privilege system, a user is the combination of a username and the host from which they are connecting from. Thus, it is possible to create a user 'newuser2'@'192.168.1.1' who is only able to connect from the IP address 192.168.1.1. It is also possible to have two users have the same user-portion, and different permissions as they login from different hosts.

Synopsis

CreateUserStmt ::=
    'CREATE' 'USER' IfNotExists UserSpecList RequireClauseOpt ConnectionOptions PasswordOption LockOption AttributeOption ResourceGroupNameOption

IfNotExists ::=
    ('IF' 'NOT' 'EXISTS')?

UserSpecList ::=
    UserSpec ( ',' UserSpec )*

UserSpec ::=
    Username AuthOption

AuthOption ::=
    ( 'IDENTIFIED' ( 'BY' ( AuthString | 'PASSWORD' HashString ) | 'WITH' StringName ( 'BY' AuthString | 'AS' HashString )? ) )?

StringName ::=
    stringLit
|   Identifier

PasswordOption ::= ( 'PASSWORD' 'EXPIRE' ( 'DEFAULT' | 'NEVER' | 'INTERVAL' N 'DAY' )? | 'PASSWORD' 'HISTORY' ( 'DEFAULT' | N ) | 'PASSWORD' 'REUSE' 'INTERVAL' ( 'DEFAULT' | N 'DAY' ) | 'FAILED_LOGIN_ATTEMPTS' N | 'PASSWORD_LOCK_TIME' ( N | 'UNBOUNDED' ) )*

LockOption ::= ( 'ACCOUNT' 'LOCK' | 'ACCOUNT' 'UNLOCK' )?

AttributeOption ::= ( 'COMMENT' CommentString | 'ATTRIBUTE' AttributeString )?

ResourceGroupNameOption::= ( 'RESOURCE' 'GROUP' Identifier)?

Examples

Create a user with the newuserpassword password.

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

Create a user who can only log in to 192.168.1.1.

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

Create a user who is enforced to log in using TLS connection.

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

Create a user who is required to use X.509 certificate at login.

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)

Create a user who is locked upon creation.

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

Create a user with a comment.

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)

Create a user with an email attribute.

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)

Create a user who is not allowed to reuse the last 5 passwords:

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

Create a user whose password is manually expired:

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

Create a user that uses the resource group rg1.

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 compatibility

The following CREATE USER options are not yet supported by TiDB, and will be parsed but ignored:

  • TiDB does not support WITH MAX_QUERIES_PER_HOUR, WITH MAX_UPDATES_PER_HOUR, and WITH MAX_USER_CONNECTIONS options.
  • TiDB does not support the DEFAULT ROLE option.
  • TiDB does not support PASSWORD EXPIRE, PASSWORD HISTORY or other options related to password.

See also