select ur.user_id, ur.role_id, r.role_name as "roleName" from sys_user_role ur left join sys_role r on r.role_id = ur.role_id where user_id = #{userId} delete from sys_user_role where user_id = #{userId} select count(1) from sys_user_role where role_id = #{roleId} delete from sys_user_role where user_id in #{userId} insert all into sys_user_role(user_id, role_id) values (#{item.userId},#{item.roleId}) SELECT 1 FROM DUAL delete from sys_user_role where user_id=#{userId} and role_id=#{roleId} delete from sys_user_role where role_id=#{roleId} and user_id in #{userId}