Days ago, I detected a query in a system in development that immediately triggered an alert on me. I communicated this finding to the team but wasn't firm enough to force an immediate change or fix it. I deeply regret it. This is what happened later: When multiple users tested the App concurrently, the database collapsed and everybody went desperate looking for the cause. This reminds me of a rule: Do not delay any fix to your database design or queries. If you see a query "smelling" bad, believe me, it will transform your whole application into a real piece of shit.