## Synopsis Use the GRANT PERMISSION statement to grant a permission (or all the available permissions) to a role. When a database object is created (keyspace, table, or role), an automatic and explicit grant of all the permissions relevant to the object are granted to the role creating it. This statement is enabled by setting the YB-TServer flag [--use_cassandra_authentication](../../../reference/configuration/yb-tserver/#ycql) to `true`. ## Syntax ### Diagram #### grant_permission GRANTall_permissionspermissionONresourceTOrole_name #### all_permissions ALLPERMISSIONS #### permission CREATEALTERDROPSELECTMODIFYAUTHORIZEDESCRIBEEXECUTEPERMISSION #### resource ALLKEYSPACESROLESKEYSPACEkeyspace_nameTABLEtable_nameROLErole_name ### Grammar ```ebnf grant_permission := GRANT all_permission | permission ON resource TO role_name; all_permissions := ALL [ PERMISSIONS ] permission := ( CREATE | ALTER | DROP | SELECT | MODIFY | AUTHORIZE | DESCRIBE | EXECUTE ) [ PERMISSION ] resource := ALL ( KEYSPACES | ROLES ) | KEYSPACE keyspace_name | [ TABLE ] table_name | ROLE role_name; ``` Where - `keyspace_name`, `table_name`, and `role_name` are text identifiers (`table_name` may be qualified with a keyspace name). ## Semantics - Permission `AUTHORIZE` on `ALL ROLES` or on the role being used in the statement is necessary. Otherwise, an unauthorized error will be returned. ## Permissions This section describes the permissions (represented by `ALTER`, `AUTHORIZE`, `CREATE`, `DESCRIBE`, `DROP`, `MODIFY`, and `SELECT`) that are necessary to execute operations on the database objects. A permission can be granted on a specific object (represented by resources `KEYSPACE`, `TABLE`, and `ROLE`) or on a whole group of objects (represented by resources `ALL KEYSPACES`, and `ALL ROLES`). Some permissions are granted implicitly, which means that you will never see them listed when you query `system_auth.role_permissions` table. Implicitly granted permissions follow these rules: - Any permission granted on `ALL KEYSPACES` is implicitly granted on every keyspace and table in the database. - Any permission granted on a specific `KEYSPACE` is implicitly granted to any table in that keyspace. - Any permission granted on `ALL ROLES` is implicitly granted on every role. ### Permissions needed to execute specific operations on a database object Operation| Permission| Resource| ---------|-----------|---------| `ALTER KEYSPACE`| `ALTER`| `ALL KEYSPACES`, or `KEYSPACE` `ALTER ROLE`| `ALTER`| `ALL ROLES`, or `ROLE` `ALTER TABLE`| `ALTER`| `ALL KEYSPACES`, `KEYSPACE`, or `TABLE` `CREATE KEYSPACE`| `CREATE`| `ALL KEYSPACES` `CREATE ROLE`| `CREATE`| `ALL ROLES` `CREATE TABLE`| `CREATE`| `ALL KEYSPACES`, `KEYSPACE` `DROP KEYSPACE`| `DROP`| `ALL KEYSPACES`, or `KEYSPACE` `DROP ROLE`| `DROP`| `ALL ROLES`, or `ROLE` `DROP TABLE`| `DROP`| `ALL KEYSPACES`, `KEYSPACE`, or `TABLE` `GRANT PERMISSION` or `REVOKE PERMISSION` on `ALL KEYSPACES`| `AUTHORIZE`| `ALL KEYSPACES` `GRANT PERMISSION` or `REVOKE PERMISSION` on `ALL ROLES`| `AUTHORIZE`| `ALL ROLES` `GRANT PERMISSION` or `REVOKE PERMISSION` on a keyspace| `AUTHORIZE`| `ALL KEYSPACES`, or `KEYSPACE` `GRANT PERMISSION` or `REVOKE PERMISSION` on a role| `AUTHORIZE` | `ALL ROLES`, or `ROLE` `GRANT PERMISSION` or `REVOKE PERMISSION` on a table| `AUTHORIZE`| `ALL KEYSPACES`, `KEYSPACE`, or `TABLE` `GRANT ROLE` or `REVOKE ROLE`| `AUTHORIZE` | `ALL ROLES`, or `ROLE` `INSERT`, `UPDATE`, `DELETE`, or `TRUNCATE`| `MODIFY`| `ALL KEYSPACES`, `KEYSPACE`, or `TABLE` `LIST ROLES` (not yet implemented)| `DESCRIBE`| `ALL ROLES` `SELECT`| `SELECT`| `ALL KEYSPACES`, `KEYSPACE`, or `TABLE` ## Examples ### Grant `MODIFY` permission on a table so role `qa` can insert rows into a table ```sql ycqlsh:example> GRANT MODIFY ON TABLE performance_tests.metrics TO qa; ``` ### Grant `SELECT` permission on a table so role `qa` can read the table ```sql ycqlsh:example> GRANT SELECT ON performance_tests.metrics TO qa; ``` ### Grant `CREATE` permission on `ALL KEYSPACES` so role `tests` can create new keyspaces ```sql ycqlsh:example> GRANT CREATE ON ALL KEYSPACES TO tests; ``` ## See also - [`ALTER ROLE`](../ddl_alter_role) - [`DROP ROLE`](../ddl_drop_role) - [`CREATE ROLE`](../ddl_create_role) - [`REVOKE ROLE`](../ddl_revoke_role) - [`GRANT PERMISSION`](../ddl_grant_permission) - [`REVOKE PERMISSION`](../ddl_revoke_permission)