MySQL中查询全部数据库占用磁盘空间大小

 

查询全部数据库占用磁盘空间大小的SQL语句：

 

复制代码 代码以下:
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;

 

查询单个库中全部表磁盘占用大小的SQL语句：

 

复制代码 代码以下:
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 = 'TestDB'
group by TABLE_NAME
order by data_length desc;

 

以上语句测试有效，注意替换以上的TestDB为数据库名