mysql数据库容量查询

1.查看所有数据库容量大小

select table_schema?as?‘数据库‘,sum(table_rows)?as?‘记录数‘,sum(truncate(data_length/1024/1024, 2))?as?‘数据容量(MB)‘,sum(truncate(index_length/1024/1024, 2))?as?‘索引容量(MB)‘from?information_schema.tablesgroup?by?table_schemaorder?by?sum(data_length) desc, sum(index_length) desc;

2.查看所有数据库各表容量大小

selecttable_schema?as?‘数据库‘,table_name?as?‘表名‘,table_rows?as?‘记录数‘,truncate(data_length/1024/1024, 2)?as?‘数据容量(MB)‘,truncate(index_length/1024/1024, 2)?as?‘索引容量(MB)‘from?information_schema.tablesorder?by?data_length desc, index_length desc;

3.查看指定数据库容量大小

例：查看mysql库容量大小
select
table_schema as ‘数据库‘,
sum(table_rows) as ‘记录数‘,
sum(truncate(data_length/1024/1024, 2)) as ‘数据容量(MB)‘,
sum(truncate(index_length/1024/1024, 2)) as ‘索引容量(MB)‘
from information_schema.tables
where table_schema=‘mysql‘;

4.查看指定数据库各表容量大小

例：查看mysql库各表容量大小
select table_schema?as?‘数据库‘,table_name?as?‘表名‘,table_rows?as?‘记录数‘,truncate(data_length/1024/1024, 2)?as?‘数据容量(MB)‘,truncate(index_length/1024/1024, 2)?as?‘索引容量(MB)‘from?information_schema.tableswhere?table_schema=‘smartmonitor‘order?by?data_length desc, index_length desc;

原文地址：https://blog.51cto.com/wangaimin/2465846