查询数据库占用空间

  • 查询数据库物理文件存放位置

show variables like 'datadir';

  • 查询所有数据库占用空间
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_length desc;
  • 查询指定数据库所有表占用空间
select TABLE_NAME, concat(truncate(data_length/1024/1024,2),' MB') as data_size,
concat(truncate(index_length/1024/1024,2),' MB') as index_size
from information_schema.tables where TABLE_SCHEMA = 'onecloud_web'
group by TABLE_NAME
order by data_length desc;