Most of the time the optimizer picks the right plan, but a single new statistic or an odd parameter can turn a smooth ETL into a snail race. Instead of frantically guessing what changed, SQL Server ...

For today, another article about Query Store. When SQL Server 2025 was released, there was not a lot of noise about Query Store when compared to the other changes, even though it has some good changes ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Birgitta Böckeler, Distinguished Engineer at ...

Production performance problems arrive with pressure. Users are waiting. Jobs are queued. Management wants answers in five minutes. The fastest-looking response — jumping straight to a query plan, ...

Microsoft introduced the Query Store when they released SQL Server 2016 and it can track statement performances, pinpoint queries and more. DBTA recently held a webinar focused on the new features and ...

Microsoft has just added support for query hints to Azure SQL Database, giving database administrators a powerful tool to manage the performance of ISV application code. Here's how it works. Database ...

The "is this server sick, and if so what kind of sick" module. Wait stats are the #1 SQL senior-level diagnostic signal. If you can name the top wait types, what they mean, and what to do about each, ...

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 ...