A Summary of TPC-DS

The state-of-the-art decision support benchmark.

The Brain of Every Database

Using Statistics to Guide Query Optimization

What has happened so far?

This post is part of a blog series about the progress of writing a query optimizer for Hyrise, a main-memory…

Taming SQL for Query Optimization

How we added a Query Optimizer to Hyrise

This is the final post in a blog series about the progress of writing a query optimizer for Hyrise, a main-memory column-oriented research database.
So far, we have written…

Query Plan Optimization: Sub-Plan Memoization

In the previous blog posts, we introduced the Hyrise…

Query Plan Optimization: Join Predicate Ordering

The gentle Art of referring to Columns

Why we abandoned column names in Hyrise. Or did we really?

What has happened so far?

How Much Is The Fish?

Maintaining and Exploiting Database Statistics in Hyrise

What has happened so far?

This post is part of a blog series about the progress of writing a query optimizer for Hyrise, a…

Manifold Operators

from SQL to function calls

Welcome to our blog post series on Query Plan Optimizations for Hyrise!

Last things first: Hyrise is a research-oriented, column-based, in-memory…

Need for Speed: Hyrise

Tools to improve C++ code performance

We (Adrian, Marcel and Toni) constitute the master’s project “C++ Low-Level Performance Engineering” at the Hasso Plattner Institute. The previous master’s project “Query Plan Optimizations” shared…