CREATE ROLE

CREATE ROLE [IF NOT EXISTS | OR REPLACE] name1 [, name2 [,...]] [ON CLUSTER cluster_name]
    [IN access_storage_type]
    [SETTINGS variable [= value] [MIN [=] min_value] [MAX [=] max_value] [CONST|READONLY|WRITABLE|CHANGEABLE_IN_READONLY] | PROFILE 'profile_name'] [,...]

CREATE ROLE accountant;
GRANT SELECT ON db.* TO accountant;

GRANT accountant TO mira;

SET ROLE accountant;
SELECT * FROM db.*;