1.檢視所有資料庫各容量大小
select
table_schema as '資料庫',
sum(table_rows) as '記錄數',
sum(truncate(data_length/1024/1024, 2)) as '資料容量(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.檢視所有資料庫各表容量大小
select
table_schema as '資料庫',
table_name as '表名',
table_rows as '記錄數',
truncate(data_length/1024/1024, 2) as '資料容量(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.檢視指定資料庫容量大小
例：檢視mysql庫容量大小
select
table_schema as '資料庫',
sum(table_rows) as '記錄數',
sum(truncate(data_length/1024/1024, 2)) as '資料容量(mb)',
sum(truncate(index_length/1024/1024, 2)) as '索引容量(mb)'
from information_schema.tables
where table_schema='mysql';
4.檢視指定資料庫各表容量大小
例：檢視mysql庫各表容量大小
select
table_schema as '資料庫',
table_name as '表名',
table_rows as '記錄數',
truncate(data_length/1024/1024, 2) as '資料容量(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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1.檢視所有資料庫各容量大小 select table schema as 資料庫 sum table rows as 記錄數 sum truncate data length 1024 1024,2 as 資料容量 mb sum truncate index length 1024 1024,2 ...
MySQL 空間計算 空間查詢
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