<ul><li>SQL interviews focus on not just basic queries but also handling NULLs, grouping, window functions, and debugging.</li><li>The article discusses 10 tricky SQL code-based interview questions with detailed explanations to enhance understanding.</li><li>In SQL, comparing two NULL values like NULL = NULL returns NULL instead of TRUE because NULL means 'unknown'.</li><li>To check if two NULLs are the same, IS NULL or IS NOT DISTINCT FROM should be used.</li></ul>

10 SQL Interview Questions That Will Expose Your Weak Points

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