mysql 导出sql结果成csv文件

mysql -uroot -p -e "use database;sql语句；" > a.csv

举例：

mysql -uroot -p -e "use main;select b.* from point a left join user b on a.user_id = b.id where a.trade_type = 'CLASS' AND a.ctime > '2018-05-28' and a.ctime < '2018-06-01';" > a.csv