MySQL查看数据库表容量大小的方法示例

本文介绍MySQL查看数据库表容量大小的命令语句，提供完整查询语句及实例，方便大家学习使用。

1、查看所有数据库容量大小

select
table_schema as \'数据库\',
sum(table_rows) as \'记录数\',
sum(truncate(data_length/1024/1024, 2)) as \'数据容量(MB)\',
sum(truncate(index_length/1024/1024, 2)) as \'索引容量(MB)\'
from information_schema.tables
group by table_schema
order by sum(data_length) desc, sum(index_length) desc;

2、查看所有数据库各表容量大小

select
table_schema as \'数据库\',
table_name as \'表名\',
table_rows as \'记录数\',
truncate(data_length/1024/1024, 2) as \'数据容量(MB)\',
truncate(index_length/1024/1024, 2) as \'索引容量(MB)\'
from information_schema.tables
order by data_length desc, index_length desc;

3、查看指定数据库容量大小

例：查看mysql库容量大小

select
table_schema as \'数据库\',
sum(table_rows) as \'记录数\',
sum(truncate(data_length/1024/1024, 2)) as \'数据容量(MB)\',
sum(truncate(index_length/1024/1024, 2)) as \'索引容量(MB)\'
from information_schema.tables
where table_schema=\'mysql\';

4、查看指定数据库各表容量大小

例：查看mysql库各表容量大小

select
table_schema as \'数据库\',
table_name as \'表名\',
table_rows as \'记录数\',
truncate(data_length/1024/1024, 2) as \'数据容量(MB)\',
truncate(index_length/1024/1024, 2) as \'索引容量(MB)\'
from information_schema.tables
where table_schema=\'mysql\'
order by data_length desc, index_length desc;

转自：https://www.jb51.net/article/169351.htm