MySQL 查看数据库数据表空间大小

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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

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';-- 查看mysql库容量大小

4.查看指定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
where table_schema='mysql' -- 查看mysql库各表容量大小
order by data_length desc, index_length desc;

参考：https://www.cnblogs.com/for917157ever/p/14032940.html

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