With all the cheerleading and the steady drumbeat of new features being released to Azure, it’s easy to lose track of the many cool and valuable new features released in the on-premises version of SQL ...

An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception. Database engines like SQL Server are incredibly complex ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Cory Benfield discusses the evolution of ...

In this contest the task was to build a real-time cardinality estimator for a table containing two integer columns. Cardinality estimation is at the heart of query optimization in relational databases ...

Just in case you missed the latest news from Microsoft, SQL Server 2014 has finally gone RTM (Released to Manufacturing). I’ve been telling you about the new features planned for this release since ...

Query engines are really good at choosing an efficient query plan. Users do not need to worry about how they write their query, since the optimizer makes all the right choices for executing the query ...

This repository contains the source code regarding our VLDB-2025 paper submission "The Accuracy of Learned Versus Traditional Cardinality Estimators: Unraveling the Evaluation Result Conundrum" For ...