Windows cmd上的mysql打开旧版本

Question

I use windows and I have previously installed mysql 5.5 for some legacy project, and now I want to use 5.7 for a new one, so I installed 5.7 in another directory, on another port and having different data directory, my problem is when i launch mysql from cmd like:

W:\MySQL57\bin> mysql -u root -p

It results in this:

W:\MySQL57\bin>mysql -u root -p
Enter password: *****
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.5.54-log MySQL Community Server (GPL)

And I am definitely sure that MySQL57 is directory for 5.7 MySQL, so what's wrong with mysql command line tool and how can i fix it to be able to use both mysqls in cmd?

Answer 1

The mysql command you are using is probably the 5.7 version, you can check this with :

W:\MySQL57\bin>mysql -v

But this is just the client !

The problem is your server version, you may have 2 versions running (5.5 and 5.7), and as you haven't specified the port you are using the default one which is used by the first server (5.5). Try to find the port for the second version (3307 ?) or kill the 5.5 server when you are connecting to the 5.7.

Answer 2

You are calling the default mysql set in Environment Variable. If you want to use a specific mysql, you need to provide the path too

W:\MySQL57\bin>"W:\MySQL57\bin\mysql" -u root -p

In case of mysql not working, you can call mysqld .

If you want mysql 5.7 to be default, just change it from Environment Variable https://dev.mysql.com/doc/mysql-windows-excerpt/5.7/en/mysql-installation-windows-path.html