Mysql, reshape data from long / tall to wide

Question

I have data in a mysql table in long / tall format (described below) and want to convert it to wide format. Can I do this using just sql?

Easiest to explain with an

Answer 1

If you were using SQL Server, this would be easy using UNPIVOT. As far as I am aware, this is not implemented in MySQL, so if you want to do this (and I'd advise against it) you'll probably have to generate the SQL dynamically, and that's messy.