The REVOKE
statement revokes privileges from users and/or roles. For the list of privileges that can be granted to and revoked from users and roles, see GRANT
.
You can use REVOKE
to directly revoke privileges from a role or user, or you can revoke membership to an existing role, which effectively revokes that role's privileges.
The REVOKE
statement performs a schema change. For more information about how online schema changes work in CockroachDB, see Online Schema Changes.
Syntax
Parameters
Parameter | Description |
---|---|
ALL ALL PRIVILEGES |
Revoke all privileges. |
targets |
A comma-separated list of database or table names, preceded by the object type (e.g., DATABASE mydatabase ).Note: To revoke privileges on all tables in a database or schema, you can use REVOKE ... ON TABLE * . For an example, see Revoke privileges on all tables in a database or schema. |
name_list |
A comma-separated list of users and roles. |
target_types |
A comma-separated list of user-defined types. |
schema_name_list |
A comma-separated list of schemas. |
ALL TABLES IN SCHEMA |
New in v21.2: Revoke privileges on all tables in a schema or list of schemas. |
privilege_list |
A comma-separated list of privileges to revoke. |
Supported privileges
The following privileges can be revoked:
Privilege | Levels |
---|---|
ALL |
Database, Schema, Table, Type |
CREATE |
Database, Schema, Table |
DROP |
Database, Table |
GRANT |
Database, Schema, Table, Type |
CONNECT |
Database |
SELECT |
Table |
INSERT |
Table |
DELETE |
Table |
UPDATE |
Table |
USAGE |
Schema, Type |
ZONECONFIG |
Database, Table |
Required privileges
To revoke privileges, user revoking privileges must have the
GRANT
privilege on the target database, schema, table, or user-defined type. In addition to theGRANT
privilege, the user revoking privileges must have the privilege being revoked on the target object. For example, a user revoking theSELECT
privilege on a table to another user must have theGRANT
andSELECT
privileges on that table.To revoke role membership, the user revoking role membership must be a role admin (i.e., members with the
WITH ADMIN OPTION
) or a member of theadmin
role. To remove membership to theadmin
role, the user must haveWITH ADMIN OPTION
on theadmin
role.
Considerations
- The
root
user cannot be revoked from theadmin
role.
Examples
Setup
The following examples use MovR, a fictional vehicle-sharing application, to demonstrate CockroachDB SQL statements. For more information about the MovR example application and dataset, see MovR: A Global Vehicle-sharing App.
To follow along, run cockroach demo
to start a temporary, in-memory cluster with the movr
dataset preloaded:
$ cockroach demo
Revoke privileges on databases
> CREATE USER max WITH PASSWORD roach;
> GRANT CREATE ON DATABASE movr TO max;
> SHOW GRANTS ON DATABASE movr;
database_name | grantee | privilege_type
----------------+---------+-----------------
movr | admin | ALL
movr | max | CREATE
movr | root | ALL
(3 rows)
> REVOKE CREATE ON DATABASE movr FROM max;
> SHOW GRANTS ON DATABASE movr;
database_name | grantee | privilege_type
----------------+---------+-----------------
movr | admin | ALL
movr | root | ALL
(2 rows)
Any tables that previously inherited the database-level privileges retain the privileges.
Revoke privileges on specific tables in a database
> GRANT DELETE ON TABLE rides TO max;
> SHOW GRANTS ON TABLE rides;
database_name | schema_name | table_name | grantee | privilege_type
----------------+-------------+------------+---------+-----------------
movr | public | rides | admin | ALL
movr | public | rides | max | DELETE
movr | public | rides | root | ALL
(3 rows)
> REVOKE DELETE ON TABLE rides FROM max;
> SHOW GRANTS ON TABLE rides;
database_name | schema_name | table_name | grantee | privilege_type
----------------+-------------+------------+---------+-----------------
movr | public | rides | admin | ALL
movr | public | rides | root | ALL
(2 rows)
Revoke privileges on all tables in a database or schema
> GRANT CREATE, SELECT, DELETE ON TABLE rides, users TO max;
> SHOW GRANTS ON TABLE movr.*;
database_name | schema_name | table_name | grantee | privilege_type
----------------+-------------+----------------------------+---------+-----------------
movr | public | promo_codes | admin | ALL
movr | public | promo_codes | root | ALL
movr | public | rides | admin | ALL
movr | public | rides | max | CREATE
movr | public | rides | max | DELETE
movr | public | rides | max | SELECT
movr | public | rides | root | ALL
movr | public | user_promo_codes | admin | ALL
movr | public | user_promo_codes | root | ALL
movr | public | users | admin | ALL
movr | public | users | max | CREATE
movr | public | users | max | DELETE
movr | public | users | max | SELECT
movr | public | users | root | ALL
movr | public | vehicle_location_histories | admin | ALL
movr | public | vehicle_location_histories | root | ALL
movr | public | vehicles | admin | ALL
movr | public | vehicles | root | ALL
(18 rows)
> REVOKE DELETE ON movr.* FROM max;
database_name | schema_name | table_name | grantee | privilege_type
----------------+-------------+----------------------------+---------+-----------------
movr | public | promo_codes | admin | ALL
movr | public | promo_codes | root | ALL
movr | public | rides | admin | ALL
movr | public | rides | max | CREATE
movr | public | rides | max | SELECT
movr | public | rides | root | ALL
movr | public | user_promo_codes | admin | ALL
movr | public | user_promo_codes | root | ALL
movr | public | users | admin | ALL
movr | public | users | max | CREATE
movr | public | users | max | SELECT
movr | public | users | root | ALL
movr | public | vehicle_location_histories | admin | ALL
movr | public | vehicle_location_histories | root | ALL
movr | public | vehicles | admin | ALL
movr | public | vehicles | root | ALL
(16 rows)
Revoke privileges on schemas
> CREATE SCHEMA cockroach_labs;
> GRANT ALL ON SCHEMA cockroach_labs TO max;
> SHOW GRANTS ON SCHEMA cockroach_labs;
database_name | schema_name | grantee | privilege_type
----------------+----------------+---------+-----------------
movr | cockroach_labs | admin | ALL
movr | cockroach_labs | max | ALL
movr | cockroach_labs | root | ALL
(3 rows)
> REVOKE CREATE ON SCHEMA cockroach_labs FROM max;
> SHOW GRANTS ON SCHEMA cockroach_labs;
database_name | schema_name | grantee | privilege_type
----------------+----------------+---------+-----------------
movr | cockroach_labs | admin | ALL
movr | cockroach_labs | max | GRANT
movr | cockroach_labs | max | USAGE
movr | cockroach_labs | root | ALL
(4 rows)
Revoke privileges on user-defined types
> CREATE TYPE status AS ENUM ('available', 'unavailable');
> GRANT ALL ON TYPE status TO max;
> SHOW GRANTS ON TYPE status;
database_name | schema_name | type_name | grantee | privilege_type
----------------+-------------+-----------+---------+-----------------
movr | public | status | admin | ALL
movr | public | status | max | ALL
movr | public | status | public | USAGE
movr | public | status | root | ALL
(4 rows)
> REVOKE GRANT ON TYPE status FROM max;
> SHOW GRANTS ON TYPE status;
database_name | schema_name | type_name | grantee | privilege_type
----------------+-------------+-----------+---------+-----------------
movr | public | status | admin | ALL
movr | public | status | max | USAGE
movr | public | status | public | USAGE
movr | public | status | root | ALL
(4 rows)
Revoke role membership
> CREATE ROLE developer WITH CREATEDB;
> CREATE USER abbey WITH PASSWORD lincoln;
> GRANT developer TO abbey;
> SHOW GRANTS ON ROLE developer;
role_name | member | is_admin
------------+--------+-----------
developer | abbey | false
(1 row)
> REVOKE developer FROM abbey;
> SHOW GRANTS ON ROLE developer;
role_name | member | is_admin
------------+--------+-----------
(0 rows)
Revoke the admin option
> GRANT developer TO abbey WITH ADMIN OPTION;
> SHOW GRANTS ON ROLE developer;
role_name | member | is_admin
------------+--------+-----------
developer | abbey | true
(1 row)
> REVOKE ADMIN OPTION FOR developer FROM abbey;
> SHOW GRANTS ON ROLE developer;
role_name | member | is_admin
------------+--------+-----------
developer | abbey | false
(1 row)