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MySQL查看数据库表容量大小

jacklove

发布： 2019-02-23 15:34:37

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本文介绍MySQL查看数据库表容量大小的命令语句，提供完整查询语句及实例，方便大家学习使用。

相关mysql视频教程推荐：《mysql教程》

1.查看所有数据库容量大小

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.tablesgroup by table_schemaorder by sum(data_length) desc, sum(index_length) desc;

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2.查看所有数据库各表容量大小

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.tablesorder by data_length desc, index_length desc;

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3.查看指定数据库容量大小

例：查看mysql库容量大小

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.tableswhere table_schema=&#39;mysql&#39;;

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这里写图片描述
4.查看指定数据库各表容量大小

例：查看mysql库各表容量大小

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.tableswhere table_schema=&#39;mysql&#39;order by data_length desc, index_length desc;

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这里写图片描述