1、进去指定schema 数据库(存放了其他的数据库的信息)
2、查询所有数据的大小
3、查看指定数据库实例的大小,比如说数据库 forexpert
4、查看指定数据库的表的大小,比如说数据库 forexpert 中的 member 表
1 |
mysql>
use information_schema; |
2 |
Database changed |
1 |
mysql> select concat(round( sum (DATA_LENGTH/1024/1024),
2), 'MB' ) |
2 |
-> as data from TABLES; |
3 |
+ -----------+ |
4 |
|
data | |
5 |
+ -----------+ |
6 |
|
6674.48MB | |
7 |
+ -----------+ |
8 |
1
row in set (16.81
sec) |
1 |
mysql> select concat(round( sum (DATA_LENGTH/1024/1024),
2), 'MB' ) |
2 |
-> as data from TABLES where table_schema= 'forexpert' ; |
3 |
+ -----------+ |
4 |
|
data | |
5 |
+ -----------+ |
6 |
|
6542.30MB | |
7 |
+ -----------+ |
8 |
1
row in set (7.47
sec) |
1 |
mysql> select concat(round( sum (DATA_LENGTH/1024/1024),2), 'MB' ) as data |
2 |
-> from TABLES where table_schema= 'forexpert' |
3 |
-> and table_name= 'member' ; |
4 |
+ --------+ |
5 |
|
data | |
6 |
+ --------+ |
7 |
|
2.52MB | |
8 |
+ --------+ |
9 |
1
row in set (1.88
sec) |