Summing a comma separated column in MySQL 4 (not 5)
To do this kind of non trivial string manipulations, you need to use stored procedures, which, for MySQL, only appeared 6 years ago, in version 5.0. MySQL 4 is now very old, the latest version from branch 4.1 was 4.1.25, in 2008. It is not supported anymore. Most Linux distributions don’t provide it anymore. It’s … Read more