MySQL查询数据库表容量大小的命令语句讲解

发布时间：2023-08-31 14:37:28 所属栏目：MySql教程来源：

导读：本文主要给大家介绍MySQL查看数据库表容量大小的命令语句讲解，希望可以给大家补充和更新些知识。

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'

本文主要给大家介绍MySQL查看数据库表容量大小的命令语句讲解，希望可以给大家补充和更新些知识。

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

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.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.tableswhere 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='mysql'order by data_length desc, index_length desc;

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