@echo off

set "Ymd=%Date:~0,4%%Date:~5,2%%Date:~8,2%%Time:~0,2%%Time:~3,2%%Time:~6,2%"

D:\phpstudy_pro\Extensions\MySQL5.5.29\bin\mysqldump  --opt -u 数据库用户名 --password=数据库密码 数据库名> E:\exp_jifang\db1_%Ymd%.sql


 @echo on