Drill down functionality is an essential feature of interactive self-service analytics. It allows end-users to gain a more in-depth insight into their data.
The drill_fields parameter controls what happens when a user clicks on the value of a table cell while exploring data. When a user does this, they “drill” into the data, allowing them to see the individual records that make up that cell.
The drill_fields parameter accepts a list of fields, sets, or a combination of both fields and sets.