MySQL中查詢所有數據庫占用磁盤空間大小

 

查詢所有數據庫占用磁盤空間大小的SQL語句：

 

復制代碼 代碼如下:
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;

 

查詢單個庫中所有表磁盤占用大小的SQL語句：

 

復制代碼 代碼如下:
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;

 

以上語句測試有效，注意替換以上的TestDB為數據庫名

 

 

mysql -h172.31.140.174 -uroot -e  "show databases; use information_schema;   select concat(round(sum(data_length/1024/1024),2),'MB') as data from tables where table_schema like 'codex_game%';"