查询所有数据库占用磁盘空间大小的sql语句:
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;
查询单个库中所有表磁盘占用大小的sql语句:
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 = 'testdb'
group by table_name
order by data_length desc;
以上语句测试有效,注意替换以上的testdb为数据库名
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