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Count NULL Values in SQL (Most People Get This Wrong) | SQL Interview Question | Q13
How do you count NULL values in a column using SQL? This looks like a simple question — but many developers get it wrong because they misunderstand how COUNT() works with NULL values. In this video, we break it down step-by-step and explain: • Why COUNT(column) gives the wrong result • How SQL treats NULL values in aggregation • How to ...
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