5 SQL mistakes that return the wrong number with no error (reproduce each one in Postgres)
More and more SQL gets written by AI now, inside chat tools, agents and "ask your data" features. Most of it runs. That's the problem: the dangerous mistakes aren't the ones that throw an error. They're the ones that run fine and return a number that looks right. Below are five of them. Each comes…
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- 2026-11-13 15:17 · DEV Community — AI
5 SQL mistakes that return the wrong number with no error (reproduce each one in Postgres)