Indexes
SQL Server indexes influence query access paths, resource usage, and overall workload behavior. These articles focus on practical indexing decisions, performance effects, and the risks of treating index changes as isolated tuning fixes.

Why SQL Server performance tuning often fails in real environments
In many SQL Server environments, performance reviews start in a familiar and reasonable way. DBAs review indexes, check statistics, analyze execution plans, and identify expensive queries. That is not wrong. In fact, it is often the right place to start, and it aligns with the general guidance described in Microsoft’s ...
