My fourth guest blog post was published today on SQLPerformance.com:

The Case of the Cardinality Estimate Red Herring

This was inspired by a case that Erin Stellato and I worked together on a few months ago. While I’ve talked quite a bit this year about the importance of investigating bad cardinality estimates, this blog post points to a scenario where the estimate issue isn’t always the full query performance troubleshooting story.