MySQL查看數(shù)據(jù)庫大小sql命令

1、進(jìn)入information_schema 數(shù)據(jù)庫（存放了其他的數(shù)據(jù)庫的信息）
use information_schema;

2、查詢所有數(shù)據(jù)的大小：

select concat(round(sum(data_length/1024/1024),2),’MB’) as data from tables;

3、查看指定數(shù)據(jù)庫的大小：

比如查看數(shù)據(jù)庫home的大小
select concat(round(sum(data_length/1024/1024),2),’MB’) as data from tables where table_schema=’home’;

4、查看指定數(shù)據(jù)庫的某個(gè)表的大小

比如查看數(shù)據(jù)庫home中 members 表的大小
select concat(round(sum(data_length/1024/1024),2),’MB’) as data from tables where table_schema=’home’ and table_name=’members’;