set today=%date:~0,4%-%date:~5,2%-%date:~8,2%
set logfilename=e:\mysqldump\%today%.sql
E:\xxx\MySQL5.7.26\bin\mysqldump -h127.0.0.1 -P3306 -uusername -ppassword --databases databasename > %logfilename%
set today=%date:~0,4%-%date:~5,2%-%date:~8,2%
set logfilename=e:\mysqldump\%today%.sql
E:\xxx\MySQL5.7.26\bin\mysqldump -h127.0.0.1 -P3306 -uusername -ppassword --databases databasename > %logfilename%