【MySQL】查询指定数据库各个表的记录数、数据容量、索引容量

一. 概述

查看mysql库中，各个表的记录数、数据容量、索引容量

二. 查询语句

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='dbname'
order by table_rows desc, index_length desc;

三. 查询表数量

select count(table_name)
from information_schema.tables
where table_schema='dbname'