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DAY 8 | NULL Handling | 30 Day SQL Challenge | #sql #dataanalytics #dataengineering

YouTubeStephen | Data

DAY 8 | NULL Handling | 30 Day SQL Challenge | #sql #dataanalytics #dataengineering

💻 Practice SQL for 30 Days with Stephen. In Day 8, we cover NULL handling - what NULLs are, why they cause silent bugs, and how to fix them. You'll learn IS NULL, IS NOT NULL, COALESCE for replacing missing values, NULLIF for preventing division-by-zero errors, and how NULLs behave in aggregates and sorting. Here's what we go through ...

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