Unable to connect to My SQL DB hosted in local

you can go for a parent child pipeline, in your parent pipeline, read the configuration file and then pass these as parameters to the child pipeline where for each run you will be passing a table name and corresponding columns and then in your file write snap you can use the parameter to name your file.

if possible please share example of your config file, that will make it easier to understand the problem.

Regards
Anubhav