【mysql】查看数据体量

查看数据库容量大小

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;

查询指定库中所有表磁盘占用大小

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='库名'
order by data_length desc, index_length desc;

查看具体表容量

use 库名;
 
show table status like '表名'\G ;

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