db_size=$(mysql -h $dbhost -u$dbuser -p"$dbpasswd" -e "use information_schema ;select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='$line' \G;
db_size=$(mysql -h $dbhost -u$dbuser -p"$dbpasswd" -e "use information_schema ;select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='$dbname' \G;