Today we’re thrilled to share that IBM has acquired Ahana, the venture-backed SaaS for Presto startup company, and we want to write more about our belief in Open Source and why IBM and Ahana are joining forces for the benefit of Presto. We believe that this is an exciting time for the Presto project. We’re…
In the previous article we looked at the abstract problem statement and possibilities inherent in scanning tables. In this piece we look at the quantitative upside with Presto. We look at a number of queries and explain the findings. The initial impulse motivating this work is the observation that table scan is by far the…
Table scan, on the face of it, sounds trivial and boring. What’s there in just reading a long bunch of records from first to last? Aren’t indexing and other kinds of physical design more interesting? As data has gotten bigger, the columnar table scan has only gotten more prominent. The columnar scan is a fairly…