mysqldump -h 127.0.0.1 -u root -p 123456 -d database -o data.sql
mysqldump -h 127.0.0.1 -u root -p 123456 -d database -o data.sql -t table1,table2
不加table(t参数)默认导出全部表
select concat(round(sum(DATA_LENGTH/1024/1024/1024),2),'GB') as data from TABLES;
可用上面参数查询全库大小
select *,concat(round(DATA_LENGTH/1024/1024/1024,2),'GB') as data from TABLES;
可用上面参数查询表大小