Hi, Is there a detailed example of how to create a resource for connecting to a database (mySql)?

Not really targeted as explaining how to make a DB resource; but this might give you some ideas: https://github.com/mrdavidlaing/dagster/blob/test-driven-software-defined-assets/e[…]n_datamart/phase_1/resources/inmemory_datawarehouse_resource.py https://github.com/mrdavidlaing/dagster/tree/test-driven-software-defined-assets/e[…]ined_assets/consumption_datamart/common/resources/datawarehouse