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Post #2421

@sqlspecialist

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PostedOct 3010/30/2025, 07:34 AM
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✅SQL Query Order of Execution🧠📊 Ever wonder how SQL actually processes your query? Here's the real order: 1️⃣FROM – Identifies source tables & joins 2️⃣WHERE – Filters rows based on conditions 3️⃣GROUP BY – Groups filtered data 4️⃣HAVING – Filters groups created 5️⃣SELECT – Chooses which columns/data to return 6️⃣DISTINCT – Removes duplicates (if used) 7️⃣ORDER BY – Sorts the final result 8️⃣LIMIT/OFFSET – Restricts number of output rows 🔥Example: SELECT department, COUNT(*) FROM employees WHERE salary > 50000 GROUP BY department HAVING COUNT(*) > 5 ORDER BY COUNT(*) DESC LIMIT 10; 💡Note: Even though SELECT comes first when we write SQL, it's processed after WHERE, GROUP BY, and HAVING—knowing this prevents sneaky bugs! 💬Tap ❤️ if this helped clarify things!