SQL UNION vs UNION ALL Explained with Examples | 3 Key Rules You Must Know | #SQL Course #10

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Learn the difference between SQL UNION and UNION ALL in just minutes! This tutorial covers key concepts, real examples, and the 3 essential rules you must follow when using them. Perfect for beginners. how to combine result sets efficiently and avoid common mistakes. Don't forget to like, share, and subscribe for more SQL tips!

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