I learnt this when I worked at www.carto.com In Geo Analysis, you start with Raw data and then apply a series of transformations to it. The idea that all these

I learnt this when I worked at www.carto.com In Geo Analysis, you start with Raw data and then apply a series of transformations to it. The idea that all these transformations could be summarized in chain of SQL commands fascinated me. I took that with me and apply it frequently every time anything even remotely resembles an ETL: "could it be done in SQL?"