u/ControlSmart467

Built a SQL query performance explainer for a side project — looking for technical feedback

I’ve been experimenting with a side project to help explain why SQL queries are slow in human-readable explanations and surface possible areas to investigate.

The idea came from spending too much time staring at execution plans, missing indexes, parameter sniffing issues, scans vs seeks, and trying to explain query-performance problems to non-DBAs or developers.

The goal is not to replace execution-plan analysis or DBA judgment — more to see whether query troubleshooting can be made easier to understand.

I’d really value feedback from experienced SQL Server folks:

  • Is something like this actually useful in practice?
  • Where would the recommendations likely break down?
  • What false positives or risky suggestions should always be avoided?
  • What context/signals would you expect before trusting optimization advice?

If anyone wants to test it with ugly/problematic queries and tell me where it fails, I’d genuinely appreciate the feedback.

sqlens.org

reddit.com
u/ControlSmart467 — 6 days ago