mysql中查看表大小的方法

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mysql 查看表的大小方法：1、查看所有數(shù)據(jù)庫(kù)各表容量大小，代碼為【truncate(data_length/1024/1024, 2) as '數(shù)據(jù)容量(MB)'】；2、查看指定數(shù)據(jù)庫(kù)各表容量大小。

mysql 查看表的大小方法：

1.查看所有數(shù)據(jù)庫(kù)容量大小

select
table_schema as '數(shù)據(jù)庫(kù)',
sum(table_rows) as '記錄數(shù)',
sum(truncate(data_length/1024/1024, 2)) as '數(shù)據(jù)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.查看所有數(shù)據(jù)庫(kù)各表容量大小

select
table_schema as '數(shù)據(jù)庫(kù)',
table_name as '表名',
table_rows as '記錄數(shù)',
truncate(data_length/1024/1024, 2) as '數(shù)據(jù)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(shù)據(jù)庫(kù)容量大小

例：查看mysql庫(kù)容量大小

select
table_schema as '數(shù)據(jù)庫(kù)',
sum(table_rows) as '記錄數(shù)',
sum(truncate(data_length/1024/1024, 2)) as '數(shù)據(jù)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(shù)據(jù)庫(kù)各表容量大小

例：查看mysql庫(kù)各表容量大小

select
table_schema as '數(shù)據(jù)庫(kù)',
table_name as '表名',
table_rows as '記錄數(shù)',
truncate(data_length/1024/1024, 2) as '數(shù)據(jù)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;

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