SYSTEM VARIABLES ADMIN Privilege

Overview

In 23.09, 6.1:

Grants ability to execute SET GLOBAL <var_name> and SELECT ... INTO @@global.<var_name>.

In 6.1:

Grants ability to execute SET GLOBAL <var_name> and SELECT ... INTO @@global.<var_name>.

In 6.0, 5.3:

Not present

USAGE

DETAILS

  • Scope: Global

  • Privilege name for GRANT: SYSTEM VARIABLES ADMIN

  • Privilege name for REVOKE: SYSTEM VARIABLES ADMIN

  • Privilege shown by SHOW GRANTS: SYSTEM VARIABLES ADMIN

The SYSTEM VARIABLES ADMIN privilege is supported starting with Xpand 6.1. It grants permission for the following operations:

The SUPER privilege is a superset of the SYSTEM VARIABLES ADMIN privilege.

SYNONYMS

SCHEMA

PARAMETERS

SKYSQL

PRIVILEGES

EXAMPLES

GRANT

The following examples demonstrate grant of a single privilege. A single GRANT statement can grant multiple privileges at the same scope by providing a comma-separated list of the privileges.

To grant the SYSTEM VARIABLES ADMIN privilege at global scope, replace the user specification ('USERNAME'@'HOSTNAME') in the following query to align to your requirements:

GRANT SYSTEM VARIABLES ADMIN
  ON *.*
  TO 'USERNAME'@'HOSTNAME';

For general guidance on privileges, see "Privileges".

REVOKE

The following examples demonstrate revoke of a single previously-granted privilege. A single REVOKE statement can revoke multiple privileges at the same scope by providing a comma-separated list of the privileges.

To revoke the SYSTEM VARIABLES ADMIN privilege at global scope, replace the user specification ('USERNAME'@'HOSTNAME') in the following query to align to your requirements:

REVOKE SYSTEM VARIABLES ADMIN
  ON *.*
  FROM 'USERNAME'@'HOSTNAME';

For general guidance on privileges, see "Privileges".

SHOW Output

A user's privileges can be displayed using the SHOW GRANTS statement.

If the SYSTEM VARIABLES ADMIN privilege is present, it will be shown as SYSTEM VARIABLES ADMIN in the output. For example:

SHOW GRANTS FOR 'app_user'@'192.0.2.%';
+---------------------------------------------------------------+
| Grants for app_user@192.0.2.%                                 |
+---------------------------------------------------------------+
| GRANT SYSTEM VARIABLES ADMIN ON *.* TO 'app_user'@'192.0.2.%' |
+---------------------------------------------------------------+

Privilege Failure

An error message is raised if an operation fails due to insufficient privileges. For example:

SET GLOBAL max_connections=1000;
ERROR 1045 (HY000): [11281] Permission denied: User "'USERNAME'@'HOSTNAME'" is missing SYSTEM VARIABLES ADMIN on *.*; transaction aborted

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

Release Series

History

23.09

  • Present starting in MariaDB Xpand 23.09.1.

6.1

  • Added in MariaDB Xpand 6.1.0.

6.0

  • Not present.

5.3

  • Not present.

Release Series

History

6.0

  • Not present.

5.3

  • Not present.

Release Series

History

6.1

  • Added in MariaDB Xpand 6.1.0.

EXTERNAL REFERENCES