I'm working with a large dataset that contains time-stamped user sign up data. I'd like to use ETL to define weekly cohorts based on when a user signs up. My goal is to use these cohorts as a foundation for beast mode calculations like "growth in weekly sign up cohorts over time", and when joined to tables containing product adoption data, "product adoption by cohort" type things.
I've been searching the archives to find something here and haven't found a solution - but if this is already documented, please point me in the right direction.