Hello everybody! When i use prefect to ETL data. I cant track mapping from fields data source to fields destination

Hey @Anh Nguyen, could you give me more details on what you’re trying to do? Are you using the Prefect tasks?

yes, i am using Prefect. the first time, I select data from source table. After that, the result for selected is loaded to destination table. In the processing i cant tracking: • How many fields of source table I selected ? Example i use Talend tool ETL data. I can tracking that

Ah I know what you are saying. We don’t do this my default. I think you need to get the task output and use Python to check the number of fields.