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;