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用SQL命令查看Mysql数据库大小_MySQL

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Release: 2016-05-30 17:11:15
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用SQL命令查看Mysql数据库大小

分类: 数据库 2011-12-05 10:57 15614人阅读 评论(0) 收藏 举报

数据库mysqlsqlschematable

 

要想知道每个数据库的大小的话,步骤如下:

 

1、进入information_schema 数据库(存放了其他的数据库的信息)

 

use information_schema;

 

 

 

2、查询所有数据的大小:

 

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

 

 

 

3、查看指定数据库的大小:

 

比如查看数据库home的大小

 

select concat(round(sum(data_length/1024/1024),2),'MB') as data from tables where table_schema='home';

 

 

 

4、查看指定数据库的某个表的大小

 

比如查看数据库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';

 

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