mysql.global_priv Table

The mysql.global_priv table contains information about users that have permission to access the MariaDB server, and their global privileges. It was introduced in MariaDB 10.4.1 to replace the mysql.user table in earlier versions.

Note that the MariaDB privileges occur at many levels. A user may not be granted create privilege at the user level, but may still have create permission on certain tables or databases, for example. See privileges for a more complete view of the MariaDB privilege system.

The mysql.global_priv table contains the following fields:

Field	Type	Null	Key	Default	Description
Field	Type	Null	Key	Default	Description
Host	char(60)	NO	PRI		Host (together with User makes up the unique identifier for this account).
User	char(80)	NO	PRI		User (together with Host makes up the unique identifier for this account).
Priv	longtext	NO			Global privileges, granted to the account and other account properties

From MariaDB 10.5.2, in order to help the server understand which version a privilege record was written by, the priv field contains a new JSON field, version_id (MDEV-21704).

Examples

select * from mysql.global_priv;
+-----------+-------------+---------------------------------------------------------------------------------------------------------------------------------------+
| Host      | User        | Priv                                                                                                                                  |
+-----------+-------------+---------------------------------------------------------------------------------------------------------------------------------------+
| localhost | root        | {"access": 18446744073709551615,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"} |
| 127.%     | msandbox    | {"access":1073740799,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"}            |
| localhost | msandbox    | {"access":1073740799,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"}            |
| localhost | msandbox_rw | {"access":487487,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"}                |
| 127.%     | msandbox_rw | {"access":487487,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"}                |
| 127.%     | msandbox_ro | {"access":262145,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"}                |
| localhost | msandbox_ro | {"access":262145,"plugin":"mysql_native_password","authentication_string":"*6C387FC3893DBA1E3BA155E74754DA6682D04747"}                |
| 127.%     | rsandbox    | {"access":524288,"plugin":"mysql_native_password","authentication_string":"*B07EB15A2E7BD9620DAE47B194D5B9DBA14377AD"}                |
+-----------+-------------+---------------------------------------------------------------------------------------------------------------------------------------+

Readable format:

SELECT CONCAT(user, '@', host, ' => ', JSON_DETAILED(priv)) FROM mysql.global_priv;

+--------------------------------------------------------------------------------------+
| CONCAT(user, '@', host, ' => ', JSON_DETAILED(priv))                                 |
+--------------------------------------------------------------------------------------+
| root@localhost => {
    "access": 18446744073709551615,
    "plugin": "mysql_native_password",
    "authentication_string": "*6C387FC3893DBA1E3BA155E74754DA6682D04747"
} |
| msandbox@127.% => {
    "access": 1073740799,
    "plugin": "mysql_native_password",
    "authentication_string": "*6C387FC3893DBA1E3BA155E74754DA6682D04747"
}           |
+--------------------------------------------------------------------------------------+

A particular user:

SELECT CONCAT(user, '@', host, ' => ', JSON_DETAILED(priv)) FROM mysql.global_priv 
  WHERE user='marijn';
+--------------------------------------------------------------------------------------+
| CONCAT(user, '@', host, ' => ', JSON_DETAILED(priv))                                 |
+--------------------------------------------------------------------------------------+
| marijn@localhost => {
    "access": 0,
    "plugin": "mysql_native_password",
    "authentication_string": "",
    "account_locked": true,
    "password_last_changed": 1558017158
} |
+--------------------------------------------------------------------------------------+

From MariaDB 10.5.2:

GRANT FILE ON *.* TO user1@localhost;
SELECT Host, User, JSON_DETAILED(Priv) FROM mysql.global_priv WHERE user='user1'\G

*************************** 1. row ***************************
               Host: localhost
               User: user1
JSON_DETAILED(Priv): {
    "access": 512,
    "plugin": "mysql_native_password",
    "authentication_string": "",
    "password_last_changed": 1581070979,
    "version_id": 100502
}

Mapping the access Field Values to Grants

The access field contains the grants of the user which can be mapped to individual grants with the following table. The most up-to-date information can be found in the sql/privilege.h file in the source code.

Grant	Bit
Grant	Bit
SELECT	(1UL << 0)
INSERT	(1UL << 1)
UPDATE	(1UL << 2)
DELETE	(1UL << 3)
CREATE	(1UL << 4)
DROP	(1UL << 5)
RELOAD	(1UL << 6)
SHUTDOWN	(1UL << 7)
PROCESS	(1UL << 8)
FILE	(1UL << 9)
GRANT	(1UL << 10)
REFERENCES	(1UL << 11)
INDEX	(1UL << 12)
ALTER	(1UL << 13)
SHOW_DB	(1UL << 14)
SUPER	(1UL << 15)
CREATE_TMP	(1UL << 16)
LOCK_TABLES	(1UL << 17)
EXECUTE	(1UL << 18)
REPL_SLAVE	(1UL << 19)
BINLOG_MONITOR	(1UL << 20)
CREATE_VIEW	(1UL << 21)
SHOW_VIEW	(1UL << 22)
CREATE_PROC	(1UL << 23)
ALTER_PROC	(1UL << 24)
CREATE_USER	(1UL << 25)
EVENT	(1UL << 26)
TRIGGER	(1UL << 27)
CREATE_TABLESPACE	(1UL << 28)
DELETE_HISTORY	(1UL << 29)
SET_USER	(1UL << 30)
FEDERATED_ADMIN	(1UL << 31)
CONNECTION_ADMIN	(1ULL << 32)
READ_ONLY_ADMIN	(1ULL << 33)
REPL_SLAVE_ADMIN	(1ULL << 34)
REPL_MASTER_ADMIN	(1ULL << 35)
BINLOG_ADMIN	(1ULL << 36)
BINLOG_REPLAY	(1ULL << 37)
SLAVE_MONITOR	(1ULL << 38)
SHOW_CREATE_ROUTINE	(1ULL << 39)

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