AntDB 数据库参考指南-SQL语法 / DDL语句18

ALTER ROLE

说明：

更改一个数据库角色

语法：

ALTER ROLE role_specification [ WITH ] option [ ... ]

其中option可以是：

      SUPERUSER | NOSUPERUSER
    | CREATEDB | NOCREATEDB
    | CREATEROLE | NOCREATEROLE
    | INHERIT | NOINHERIT
    | LOGIN | NOLOGIN
    | REPLICATION | NOREPLICATION
    | BYPASSRLS | NOBYPASSRLS
    | CONNECTION LIMIT connlimit
    | [ ENCRYPTED ] PASSWORD 'password' | PASSWORD NULL
    | VALID UNTIL 'timestamp'

ALTER ROLE name RENAME TO new_name

ALTER ROLE { role_specification | ALL } [ IN DATABASE database_name ] SET configuration_parameter { TO | = } { value | DEFAULT }
ALTER ROLE { role_specification | ALL } [ IN DATABASE database_name ] SET configuration_parameter FROM CURRENT
ALTER ROLE { role_specification | ALL } [ IN DATABASE database_name ] RESET configuration_parameter
ALTER ROLE { role_specification | ALL } [ IN DATABASE database_name ] RESET ALL

其中role_specification可以是：

    role_name
  | CURRENT_USER
  | SESSION_USER

示例：

--更改一个角色的口令：
ALTER ROLE davide WITH PASSWORD 'hu8jmn3';

--让一个角色能够创建其他角色和新的数据库：
ALTER ROLE miriam CREATEROLE CREATEDB;