We are pleased to announce that Denodo Technologies has joined the Presto Foundation. The Denodo Platform is a popular data management platform based on the concept of data virtualization and logical data models, which includes capabilities for data integration, privacy, governance, and data cataloging. Denodo is often used to implement logical and distributed data architectures…
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…