Most SQL users get this wrong 👀 You cannot use aggregate functions like COUNT() in the WHERE clause. ❌ WHERE COUNT(*) > 5 ✔️ HAVING COUNT(*) > 5 🔹 WHERE filters rows before grouping 🔹 HAVING filters results after aggregation Think of it this way: Use WHERE to filter raw data Use HAVING to filter grouped results This small distinction causes big SQL bugs in real projects. Save this — it’ll save you hours later 🧠💡 #SQLByteByByte #SQLTips #SQLMistakes #GROUPBY #HAVING #WHERE #DataDrivenInsight
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