GRANT

This statement allocates privileges to a pre-existing user in TiDB. The privilege system in TiDB follows MySQL, where credentials are assigned based on a database/table pattern.

Synopsis

GrantStmt:

GrantStmt

PrivElemList:

PrivElemList

PrivElem:

PrivElem

PrivType:

PrivType

ObjectType:

ObjectType

PrivLevel:

PrivLevel

UserSpecList:

UserSpecList

Examples

mysql> CREATE USER newuser IDENTIFIED BY 'mypassword';
Query OK, 1 row affected (0.02 sec)

mysql> GRANT ALL ON test.* TO 'newuser';
Query OK, 0 rows affected (0.03 sec)

mysql> SHOW GRANTS FOR 'newuser';
+-------------------------------------------------+
| Grants for newuser@%                            |
+-------------------------------------------------+
| GRANT USAGE ON *.* TO 'newuser'@'%'             |
| GRANT ALL PRIVILEGES ON test.* TO 'newuser'@'%' |
+-------------------------------------------------+
2 rows in set (0.00 sec)

MySQL compatibility

  • Similar to MySQL, the USAGE privilege denotes the ability to log into a TiDB server.
  • Column level privileges are not currently supported.
  • Similar to MySQL, when the NO_AUTO_CREATE_USER sql mode is not present, the GRANT statement will automatically create a new user with an empty password when a user does not exist. Removing this sql-mode (it is enabled by default) presents a security risk.

See also