MySQL imports and exports multiple libraries at one time

mysql -e "show databases;" -h xxx -u xxx -p xxx | grep -v "xx" | grep "yy" | xargs mysqldump -h xxx -ugaia_user -pxxx --databases > xxx.sql

export ：

mysql -u root -p123 < xxx.sql

Streaming data ： mysqldump -u root -p database_name  | mysql -h other-host.com database_name