MYSQL容量照会

1.すべてのデータベース容量の表示

select
table_schema as '   ',
sum(table_rows) as '   ',
sum(truncate(data_length/1024/1024, 2)) as '    (MB)',
sum(truncate(index_length/1024/1024, 2)) as '    (MB)'
from information_schema.tables
group by table_schema
order by sum(data_length) desc, sum(index_length) desc;

2.すべてのデータベースの各テーブル容量のサイズを表示する

select
table_schema as '   ',
table_name as '  ',
table_rows as '   ',
truncate(data_length/1024/1024, 2) as '    (MB)',
truncate(index_length/1024/1024, 2) as '    (MB)'
from information_schema.tables
order by data_length desc, index_length desc;

3.指定したデータベース容量の表示
例:mysqlライブラリ容量サイズの表示

select
table_schema as '   ',
sum(table_rows) as '   ',
sum(truncate(data_length/1024/1024, 2)) as '    (MB)',
sum(truncate(index_length/1024/1024, 2)) as '    (MB)'
from information_schema.tables
where table_schema='mysql';

4.指定したデータベースの各テーブル容量の表示
例:mysqlライブラリの各テーブル容量サイズの表示

select
table_schema as '   ',
table_name as '  ',
table_rows as '   ',
truncate(data_length/1024/1024, 2) as '    (MB)',
truncate(index_length/1024/1024, 2) as '    (MB)'
from information_schema.tables
where table_schema='mysql'
order by data_length desc, index_length desc;