delete from sys_user_role where user_id=#{userId}
delete from sys_user_role where user_id in
#{userId}
insert into sys_user_role(user_id, role_id) values
(#{item.userId},#{item.roleId})
delete from sys_user_role where user_id=#{userId} and role_id=#{roleId}
insert into sys_user_role(user_id, role_id) values(#{userId},#{roleId})
delete from sys_user_role where role_id=#{roleId} and user_id in
#{userId}
delete from sys_user_role where role_id = #{roleId}
INSERT INTO sys_user_role(user_id,role_id) SELECT u.user_id,#{roleId} FROM `sys_user` u