本文介紹MySQL查看數(shù)據(jù)庫表容量大小的命令語句，提供完整查詢語句及實(shí)例，方便大家學(xué)習(xí)使用。
1.查看所有數(shù)據(jù)庫容量大小
select
table_schema as '數(shù)據(jù)庫',
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)庫各表容量大小
select
table_schema as '數(shù)據(jù)庫',
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)庫容量大小
例：查看mysql庫容量大小
select
table_schema as '數(shù)據(jù)庫',
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)庫各表容量大小
例：查看mysql庫各表容量大小
select
table_schema as '數(shù)據(jù)庫',
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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