@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 jifang --password=jifang666!@#$ jifang> E:\exp_jifang\db1_%Ymd%.sql
 @echo on