MySQL中查詢全部數據庫佔用磁盤空間大小和單個庫中全部表的大小的sql語句

查詢全部數據庫佔用磁盤空間大小的SQL語句：

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;

 

查詢單個庫中全部表磁盤佔用大小的SQL語句：

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;

注意替換以上的TestDB爲具體的數據庫名