If you haven't read it already, I strongly suggest reading the original Dremel paper [0]. It's no doubt somewhat out of date, but I believe BQ is based in Dreme

If you haven't read it already, I strongly suggest reading the original Dremel paper [0]. It's no doubt somewhat out of date, but I believe BQ is based in Dremel. tl;dr for underlying storage model: distributed column store which pushes computation down a tree to leaf nodes to parallelize disk I/O. Parent nodes aggregate computations before returning to the client. [0]: https://ai.google/research/pubs/pub36632 https://ai.google/research/pubs/pub36632