SET ROLE
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语法
SET ROLE { role | NONE }
描述
SET ROLE
语句为当前会话启用一个 角色,以及该角色关联的所有权限。要取消角色,请使用 NONE
。
如果指定了不存在或未分配给用户的角色,则会出现 ERROR 1959 (OP000): Invalid role specification
错误。
如果用户已分配了默认角色,则在用户连接时会隐式执行自动 SET ROLE。请参见 SET DEFAULT ROLE。
示例
SELECT CURRENT_ROLE; +--------------+ | CURRENT_ROLE | +--------------+ | NULL | +--------------+ SET ROLE staff; SELECT CURRENT_ROLE; +--------------+ | CURRENT_ROLE | +--------------+ | staff | +--------------+ SET ROLE NONE; SELECT CURRENT_ROLE(); +----------------+ | CURRENT_ROLE() | +----------------+ | NULL | +----------------+
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