MySQL View database table capacity size-Mysql Tutorial-php.cn

MySQL View database table capacity size

jacklove

Release： 2019-02-23 15:34:37

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This article introduces the MySQL command statement to check the capacity of the database table, and provides complete query statements and examples for everyone to learn and use.

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1. View the capacity of all databases

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. Check the capacity of each table in all databases

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. Check the capacity of the specified database

Example: Check the capacity of the mysql library

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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MySQL View database table capacity size
4. Check the capacity of each table in the specified database

Example: Check the capacity of each table in the mysql library

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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MySQL View database table capacity size

This article It explains how to check the database table capacity in MySQL. For more related knowledge, please pay attention to the PHP Chinese website.

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