select * from **** order by `create_time` desc limit 220; 按时间顺序递减
select COLUMN_NAME from information_schema.COLUMNS where table_name = '****'; 获取一个表的所有字段
select * from **** order by `create_time` desc limit 220; 按时间顺序递减
select COLUMN_NAME from information_schema.COLUMNS where table_name = '****'; 获取一个表的所有字段