mysql查看大小

1.查看全部數據庫容量大小

select
table_schema as '數據庫',
sum(table_rows) as '記錄數',
sum(truncate(data_length/1024/1024, 2)) as '數據容量(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;

2.查看全部數據庫各表容量大小

select
table_schema as '數據庫',
table_name as '表名',
table_rows as '記錄數',
truncate(data_length/1024/1024, 2) as '數據容量(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;

3.查看指定數據庫容量大小

select
table_schema as '數據庫',
sum(table_rows) as '記錄數',
sum(truncate(data_length/1024/1024, 2)) as '數據容量(MB)',
sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'
from information_schema.tables
where table_schema='mysql';

4.查看指定數據庫各表容量大小

select
table_schema as '數據庫',
table_name as '表名',
table_rows as '記錄數',
truncate(data_length/1024/1024, 2) as '數據容量(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;