1，查看所有数据库大小

SRE实战 互联网时代守护先锋，助力企业售后服务体系运筹帷幄！一键直达领取阿里云限量特价优惠。

use information_schema;
select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES;

2，查看指定数据库大小

use information_schema;
select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='dbname';

3，查看指定数据库中指定表的大小

use information_schema;

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

 

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