How to check the size of a table in mysql-Mysql Tutorial-php.cn

mysql How to check the size of the table: 1. Check the capacity of each table in all databases, the code is [truncate(data_length/1024/1024, 2) as 'data capacity (MB)']; 2. Check the specified The capacity of each database table.

How to check the size of a table in mysql

mysql method to view the size of the table:

1. View the capacity of all databases

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;

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2. Check the capacity of each table in all databases

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;

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3. Check the capacity of the specified database

Example: Check the capacity of the mysql library

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';

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4. Check the capacity of each table in the specified database

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

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' order by data_length desc, index_length desc;

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