SQL Interview Question Most Developers Get Wrong
Amazon asked this SQL question — and most developers get it WRONG. Here's why ⬇️
NOT IN looks right. LEFT JOIN is safe. But NOT EXISTS is the one you write in production.
This SQL Short covers:
✅ Why NOT IN silently breaks on NULL values
✅ The LEFT JOIN trick that passes interviews
✅ NOT EXISTS — fastest query, cleanest code
If you're preparing for a data analyst or data engineer interview, this is the SQL mistake you CANNOT afford to make.
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#SQLInterview #DataAnalyst #SQLTips #NotExists #LeftJoin
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