查看数据库大小

mysql> use information_schema;
Database changed

mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),\'MB\') as data from TABLES
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),\'MB\') as data from TABLES where table_schema=\'xxxxx\'

select concat(round(sum(data_length/1024/1024),2),\'MB\') as data from tables where table_schema=\'home\' and table_name=\'members\';