USER_ATTRIBUTES

The USER_PRIVILEGES table provides information about user comments and user attributes. This information comes from the mysql.user system table.

USE information_schema; DESC user_attributes;
+-----------+--------------+------+------+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-----------+--------------+------+------+---------+-------+ | USER | varchar(32) | NO | | NULL | | | HOST | varchar(255) | NO | | NULL | | | ATTRIBUTE | longtext | YES | | NULL | | +-----------+--------------+------+------+---------+-------+ 3 rows in set (0.00 sec)

Fields in the USER_ATTRIBUTES table are described as follows:

  • USER: The user name.
  • HOST: The host from which the user can connect to TiDB. If the value of this field is , it means that the user can connect to TiDB from any host.
  • ATTRIBUTE: The comment and attribute of the user, which are set by the CREATE USER or ALTER USER statement.

The following is an example:

CREATE USER testuser1 COMMENT 'This user is created only for test'; CREATE USER testuser2 ATTRIBUTE '{"email": "user@pingcap.com"}'; SELECT * FROM information_schema.user_attributes;
+-----------+------+---------------------------------------------------+ | USER | HOST | ATTRIBUTE | +-----------+------+---------------------------------------------------+ | root | % | NULL | | testuser1 | % | {"comment": "This user is created only for test"} | | testuser2 | % | {"email": "user@pingcap.com"} | +-----------+------+---------------------------------------------------+ 3 rows in set (0.00 sec)

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