mysql concat 索引_mysql-查看数据库、索引、表大小

2020/09/03

mysql查看当前所有的数据库和索引大小

select table_schema, concat(truncate(sum(data_length)/1024/1024,2),' mb') as data_size,

concat(truncate(sum(index_length)/1024/1024,2),'mb') as index_size

from information_schema.tables

group by table_schema

order by data_length desc;

查询单独数据库大小

SELECT

table_schema AS 'DB Name',

ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) AS 'DB Size in MB'

FROM

information_schema.tables

WHERE

table_schema = '数据库名称'

GROUP BY

table_schema;

mysql查看当前某个数据库和数据库下所有的表的大小

select table_name, concat(truncate(data_length/1024/1024,2),' mb') as data_size,

concat(truncate(index_length/1024/1024,2),' mb') as index_size

from information_schema.tables where table_schema = 'ops_monitor'     #这个修改为数据库名称

group by table_name

order by data_length desc;