mysql 查詢表儲存空間占用

使用 schema 資料庫

mysql> use information_schema;

說明table_schema

資料庫名

table_name

表名engine

所使用的儲存引擎

tables_rows

記錄數data_length

資料大小

index_length

索引大小

查詢資料庫總占用空間

mysql> select concat(round(sum(data_length/1024/1024), 2),'mb') as data_size from tables

mysql> select concat(round(sum(data_length/1024/1024), 2),'mb') as data_size 

from tables 
where table_schema='db_name';

mysql> select concat(round(sum(data_length/1024/1024),2),'mb') as 	

data_size 
from tables 
where table_schema='db_name' and table_name='tb_name';

mysql> select table_name, concat(round(sum(data_length/1024/1024),2),'mb') as 		

data_size  
from tables 
where table_schema='db_name' 
group by table_name;

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