Nice to connect with people in this forum.
I would like to make data logger with flow below,
PLC (Data source) -> Node-Red -> MySql database.
I have store value to database with function below :
msg.topic = "INSERT INTO inject_testing (HOD_Ozone) VALUES (" + msg.payload.HOD_Ozone + ");";
The next purpose is to get variable name as value and store it in database, for example the variable name is "HOD_Ozone" then I need to get "HOD_Ozone" store it in other variable to be able store in db.
Anyone have experience in this case ?