## 檢視所有資料庫的大小並排序
select TABLE_SCHEMA, 
concat(truncate(sum(data_length)/1024/1024,2),' MB') as data_size,
concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_size
from information_schema.tables
group by TABLE_SCHEMA
order by data_length desc;

## 檢視資料庫中所有表的大小並排序
select TABLE_NAME, 
concat(truncate
 
(data_length/1024/1024,2),' MB') as data_size,
concat(truncate(index_length/1024/1024,2),' MB') as index_size
from information_schema.tables where TABLE_SCHEMA = 'sptreportdb_pd'
group by TABLE_NAME
order by data_length desc;