用SQL命令查看Mysql数据库大小
时间：2021-07-01 10:21:17
帮助过：3人阅读
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 information_schema.tables
;
-- 3. 查看实例下所有数据库的空间占用情况
select
table_schema
,concat(round(
sum(data_length
/1024/1024),
2),
‘MB‘)
as data
from information_schema.tables
where table_schema
like ‘db_name_%‘
group by table_schema
;
-- 4.查看指定数据库的大小：
select concat(
round(
sum(data_length
/1024/1024),
2),
‘MB‘)
as data
from information_schema.tables
where table_schema
=‘home‘
;
-- 5. 查看指定数据库下的所有表的空间占用情况
select table_name,
round(
sum(data_length
/1024/1024),
2)
as size
from information_schema.tables
where table_schema
=‘mycommunity_zhhy_1‘
group by table_name
order by size
;
-- 6. 查看指定数据库的某个表的大小
select concat(
round(
sum(data_length
/1024/1024),
2),
‘MB‘)
as data
from information_schema.tables
where table_schema
=‘home‘ and table_name
=‘members‘
;
用SQL命令查看Mysql数据库大小
标签：unity and sch select inf pre tables l命令 use
