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mysql 如何查看表的大小

coldplay.xixi

發布： 2020-08-24 16:16:44

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mysql 查看表的大小方法：1、查看所有資料庫各表容量大小，代碼為【truncate(data_length/1024/1024, 2) as '資料容量(MB)'】；2、查看指定資料庫各表容量大小。

mysql 如何查看表的大小

mysql 查看表格的大小方法：

1.查看所有資料庫容量大小

select
table_schema as &#39;数据库&#39;,
sum(table_rows) as &#39;记录数&#39;,
sum(truncate(data_length/1024/1024, 2)) as &#39;数据容量(MB)&#39;,
sum(truncate(index_length/1024/1024, 2)) as &#39;索引容量(MB)&#39;
from information_schema.tables
group by table_schema
order by sum(data_length) desc, sum(index_length) desc;

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2.查看所有資料庫各表容量大小

select
table_schema as &#39;数据库&#39;,
table_name as &#39;表名&#39;,
table_rows as &#39;记录数&#39;,
truncate(data_length/1024/1024, 2) as &#39;数据容量(MB)&#39;,
truncate(index_length/1024/1024, 2) as &#39;索引容量(MB)&#39;
from information_schema.tables
order by data_length desc, index_length desc;

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3.查看指定資料庫容量大小

範例：查看mysql庫容量大小

select
table_schema as &#39;数据库&#39;,
sum(table_rows) as &#39;记录数&#39;,
sum(truncate(data_length/1024/1024, 2)) as &#39;数据容量(MB)&#39;,
sum(truncate(index_length/1024/1024, 2)) as &#39;索引容量(MB)&#39;
from information_schema.tables
where table_schema=&#39;mysql&#39;;

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4.查看指定資料庫各表容量大小

範例：查看mysql庫各表容量大小

select
table_schema as &#39;数据库&#39;,
table_name as &#39;表名&#39;,
table_rows as &#39;记录数&#39;,
truncate(data_length/1024/1024, 2) as &#39;数据容量(MB)&#39;,
truncate(index_length/1024/1024, 2) as &#39;索引容量(MB)&#39;
from information_schema.tables
where table_schema=&#39;mysql&#39;
order by data_length desc, index_length desc;

登入後複製

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