MySQL Workbench is an ER/database modeling tool designed for MySQL. It is the successor of the famous database design tool DBDesigner4. Ability to design and create new database schemas, create database documentation, and perform complex MySQL migrations. Today we will introduce the installation method.
Install mysql
Enter the official website https://dev.mysql.com/downloa...
Find the mysql installer x64 or x32 you need
Enter the download page and start downloading. After downloading, you will get mysql-installer-community-8.0.23.0.msi
Choose No thanks, just start my download.
Start installing mysql
一 fool next
Install server
all the way next
Set account password
mysql tutorial"
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转换方法:1、利用cast函数,语法“select * from 表名 order by cast(字段名 as SIGNED)”;2、利用“select * from 表名 order by CONVERT(字段名,SIGNED)”语句。

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在mysql中,可以利用REGEXP运算符判断数据是否是数字类型,语法为“String REGEXP '[^0-9.]'”;该运算符是正则表达式的缩写,若数据字符中含有数字时,返回的结果是true,反之返回的结果是false。

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