mysql.db Table

The mysql.db table contains information about database-level privileges. The table can be queried and although it is possible to directly update it, it is best to use GRANT for setting privileges.

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

This table uses the Aria storage engine.

The mysql.db table contains the following fields:

Field	Type	Null	Key	Default	Description	Introduced
Field	Type	Null	Key	Default	Description	Introduced
Host	char(60)	NO	PRI		Host (together with User and Db makes up the unique identifier for this record. Until MariaDB 5.5, if the host field was blank, the corresponding record in the mysql.host table would be examined. From MariaDB 10.0, a blank host field is the same as the % wildcard.
Db	char(64)	NO	PRI		Database (together with User and Host makes up the unique identifier for this record.
User	char(80)	NO	PRI		User (together with Host and Db makes up the unique identifier for this record.
Select_priv	enum('N','Y')	NO		N	Can perform SELECT statements.
Insert_priv	enum('N','Y')	NO		N	Can perform INSERT statements.
Update_priv	enum('N','Y')	NO		N	Can perform UPDATE statements.
Delete_priv	enum('N','Y')	NO		N	Can perform DELETE statements.
Create_priv	enum('N','Y')	NO		N	Can CREATE TABLE's.
Drop_priv	enum('N','Y')	NO		N	Can DROP DATABASE's or DROP TABLE's.
Grant_priv	enum('N','Y')	NO		N	User can grant privileges they possess.
References_priv	enum('N','Y')	NO		N	Unused
Index_priv	enum('N','Y')	NO		N	Can create an index on a table using the CREATE INDEX statement. Without the INDEX privilege, user can still create indexes when creating a table using the CREATE TABLE statement if the user has have the CREATE privilege, and user can create indexes using the ALTER TABLE statement if they have the ALTER privilege.
Alter_priv	enum('N','Y')	NO		N	Can perform ALTER TABLE statements.
Create_tmp_table_priv	enum('N','Y')	NO		N	Can create temporary tables with the CREATE TEMPORARY TABLE statement.
Lock_tables_priv	enum('N','Y')	NO		N	Acquire explicit locks using the LOCK TABLES statement; user also needs to have the SELECT privilege on a table in order to lock it.
Create_view_priv	enum('N','Y')	NO		N	Can create a view using the CREATE_VIEW statement.
Show_view_priv	enum('N','Y')	NO		N	Can show the CREATE VIEW statement to create a view using the SHOW CREATE VIEW statement.
Create_routine_priv	enum('N','Y')	NO		N	Can create stored programs using the CREATE PROCEDURE and CREATE FUNCTION statements.
Alter_routine_priv	enum('N','Y')	NO		N	Can change the characteristics of a stored function using the ALTER FUNCTION statement.
Execute_priv	enum('N','Y')	NO		N	Can execute stored procedure or functions.
Event_priv	enum('N','Y')	NO		N	Create, drop and alter events.
Trigger_priv	enum('N','Y')	NO		N	Can execute triggers associated with tables the user updates, execute the CREATE TRIGGER and DROP TRIGGER statements.
Delete_history_priv	enum('N','Y')	NO		N	Can delete rows created through system versioning.	MariaDB 10.3.5

The Acl_database_grants status variable, added in MariaDB 10.1.4, indicates how many rows the mysql.db table contains.

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