select id, phone, app_id from sys_wechat where id = #{id} select id, phone, app_id from sys_wechat where open_id = #{openId} insert into sys_wechat (open_id, phone) values (#{openId}, #{phone}) update sys_wechat set open_id = #{openId}, phone = #{phone} where id = #{id} delete from sys_wechat where id = #{id}