The GRANT <privileges> statement lets you control each role or user's SQL privileges for interacting with specific databases and tables.

For privileges required by specific statements, see the documentation for the respective SQL statement.

Synopsis

GRANT ALL CREATE GRANT SELECT DROP INSERT DELETE UPDATE , ON TABLE table_name , DATABASE database_name , TO user_name ,

Required privileges

The user granting privileges must have the GRANT privilege on the target databases or tables.

New in v20.1 In addition to the GRANT privilege, the user granting privileges must have the privilege being granted on the target database or tables. For example, a user granting the SELECT privilege on a table to another user must have the GRANT and SELECT privileges on that table.

Supported privileges

Roles and users can be granted the following privileges. Some privileges are applicable both for databases and tables, while other are applicable only for tables (see Levels in the table below).

  • When a role or user is granted privileges for a database, new tables created in the database will inherit the privileges, but the privileges can then be changed.

    Note:

    The user does not get privileges to existing tables in the database. To grant privileges to a user on all existing tables in a database, see Grant privileges on all tables in a database

  • When a role or user is granted privileges for a table, the privileges are limited to the table.

  • The root user automatically belongs to the admin role and has the ALL privilege for new databases.

  • For privileges required by specific statements, see the documentation for the respective SQL statement.

Privilege Levels
ALL Database, Table
CREATE Database, Table
DROP Database, Table
GRANT Database, Table
SELECT Table
INSERT Table
DELETE Table
UPDATE Table

Parameters

Parameter Description
table_name A comma-separated list of table names. Alternately, to grant privileges to all tables, use *. ON TABLE table.* grants apply to all existing tables in a database but will not affect tables created after the grant.
database_name A comma-separated list of database names.

Privileges granted on databases will be inherited by any new tables created in the databases, but do not affect existing tables in the database.
user_name A comma-separated list of users and/or roles to whom you want to grant privileges.

Examples

Grant privileges on databases

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> GRANT CREATE ON DATABASE db1, db2 TO maxroach, betsyroach;
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> SHOW GRANTS ON DATABASE db1, db2;
+----------+------------+------------+
| Database |    User    | Privileges |
+----------+------------+------------+
| db1      | betsyroach | CREATE     |
| db1      | maxroach   | CREATE     |
| db1      | root       | ALL        |
| db2      | betsyroach | CREATE     |
| db2      | maxroach   | CREATE     |
| db2      | root       | ALL        |
+----------+------------+------------+
(6 rows)

Grant privileges on specific tables in a database

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> GRANT DELETE ON TABLE db1.t1, db1.t2 TO betsyroach;
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> SHOW GRANTS ON TABLE db1.t1, db1.t2;
+-------+------------+------------+
| Table |    User    | Privileges |
+-------+------------+------------+
| t1    | betsyroach | DELETE     |
| t1    | root       | ALL        |
| t2    | betsyroach | DELETE     |
| t2    | root       | ALL        |
+-------+------------+------------+
(4 rows)

Grant privileges on all tables in a database

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> GRANT SELECT ON TABLE db2.* TO henryroach;
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> SHOW GRANTS ON TABLE db2.*;
+-------+------------+------------+
| Table |    User    | Privileges |
+-------+------------+------------+
| t1    | henryroach | SELECT     |
| t1    | root       | ALL        |
| t2    | henryroach | SELECT     |
| t2    | root       | ALL        |
+-------+------------+------------+
(4 rows)

Make a table readable to every user in the system

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> GRANT SELECT ON TABLE myTable TO public;
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> SHOW GRANTS ON TABLE myTable;
  database_name | schema_name | table_name | grantee | privilege_type
+---------------+-------------+------------+---------+----------------+
  defaultdb     | public      | mytable    | admin   | ALL
  defaultdb     | public      | mytable    | public  | SELECT
  defaultdb     | public      | mytable    | root    | ALL
(3 rows)

See also



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