摘要: 1、取数据库最后30个数据 select x,y from sin order by id desc limit 0,30; 2、将数据再反序,横坐标反转 select * from (select x,y from sin order by id desc limit 0,30) as sinxy 阅读全文
posted @ 2022-05-28 20:00 华小电 阅读(240) 评论(0) 推荐(0) 编辑