MYSQL-查看每个数据库的大小和每个表的大小

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原文链接：https://blog.csdn.net/sand_clock/article/details/87101550

每个数据库大小

select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024,2),'MB') as data_size,
concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_size
from information_schema.tables
group by TABLE_SCHEMA
order by data_size desc;

数据库下每个表的大小

use information_schema;
select table_name,table_rows from tables
where TABLE_SCHEMA = 'database_name'
order by table_rows desc;