Install and upgrade MySQL 4.1

4.1 is an Alpha test version, which is not made as a dummies installer and may be inconvenient. However, I like it very much.
Distribution of compressed packages: The following describes how to install and upgrade the package 3.23.49.
A new installation
Decompress the file with winrarto the C: mysql directory (default directory, worry-free !!), Run
C: mysqlinmysqld -??? -- Install
Net start mysql
It's very easy. If you install it in another directory, remember to modify the path in the configuration file according to the previous instructions!
Ii. Upgrade and install
There is no big difference between upgrading from 3.23.x or from 4.0.x!
First, back up the old database and prepare a regret for yourself, just in case !!
Stop the current mysql database and remove it from the service. If WinMySQLAdmin is still running, close it!
In addition to the data directory, all old files are overwritten with files of Version 4.1!
Start mysql from the command line with c: mysqlinmysqld-opt -- skip-grant-tables, and then execute
C: mysqlinmysql <c: mysqlscriptsmysql_fix_privilege_tables. SQL
Permission table.
If the preceding steps are correct, stop mysql c: mysqlinmysqladmin-u root shutdown.
Then reinstall the system service as needed!
I looked at the header file of this version and felt dizzy. If you are interested, go and have a look!