以下是使用Mermaid语法创建的类图: DatabaseQuery+connectToDatabase() : void+queryDataSize() : void+queryIndexSize() : void+analyzeResults() : void 五、结论 通过本文的介绍,我们了解到了如何使用MySQL查询数据库的数据大小和索引大小。这些查询对于数据库的优化和维护至关重要。同时,我们也学习了如何使用甘特...
importmysql.connector# 连接到数据库cnx=mysql.connector.connect(user='user',password='password',host='localhost',database='database_name')# 创建游标对象cursor=cnx.cursor()# 查询每个表的大小,并累加得到数据库的总大小query="SELECT SUM(data_length + index_length) AS total_size FROM information_sch...
Re: GET THE DATABASE SIZE FROM THE MYSQL QUERY BROWSER tom corcoran September 05, 2008 05:11AM Re: GET THE DATABASE SIZE FROM THE MYSQL QUERY BROWSER Alok Rawat January 05, 2009 07:36AM Sorry, you can't reply to this topic. It has been closed....
Data Query LANGUAGE : 数据查询语言 所有的查询操作都用它 select 简单的查询,复杂的查询它都能做 数据库中最核心,最重要的语句 使用频率最高的语句 测试用sql数据库 -- test 1111111111111111111111111111111111 CREATE DATABASE IF NOT EXISTS `school`; -- 创建一个school数据库 USE `school`;-- 创建学生表...
MySQL.Database(serveras text,databaseas text, optionaloptionsas nullable record) as table 关于 在名为database的数据库实例中,返回服务器server上 MySQL 数据库中可用的 SQL 表、视图和存储标量函数的表。 可以使用服务器选择性指定端口,并用冒号分隔。 可以指定可选记录参数options来控制以下选项: ...
DATA_LENGTH:数据大小 INDEX_LENGTH:索引大小 其他字段请参考MySQL的手册,查看一个表占用空间的大小,那就相当于是数据大小 + 索引大小。 查看所有库的大小 mysql> use information_schema; Database changed mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES; ...
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SELECT table_schema "Data Base Name", sum( data_length + index_length) / 1024 / 1024 "Data Base Size in MB" FROM information_schema.TABLES GROUP BY table_schema ; But the thing is on MySQL 4.1 the database information_schema doesn't exist so the previous query doesn't work... Is ...