mysql查询数据库的大小的方法:1、查询整个库的大小,代码为【select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB')】;2、查询某个库的大小,代码为【from informati】。
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mysql查询数据库的大小的方法:
1、查询整个mysql数据库,整个库的大小;单位转换为MB。
select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from information_schema.TABLES
2、查询mysql数据库,某个库的大小;
select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from information_schema.TABLES where table_schema = 'testdb'
3、查看库中某个表的大小;
select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from information_schema.TABLES where table_schema = 'testdb' and table_name = 'test_a';
4、查看mysql库中,test开头的表,所有存储大小;
select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from information_schema.TABLES where table_schema = 'testdb' and table_name like 'test%';