global variable

I have a global and local variable with the same name. If I change the local variable, it overrides the global one. Example below. Demo is also attached. This is not how it works in other languages. A local variable will never override a global variable. Bug or "feature"? Sub Globals...

Hello everybody, i need a little bit help. I know it is not the best idea to connect a ESP/Arduino to a SQL Database but i need this to reduce the complexity of my project. There are better and faster Solutions like this...