PostgreSQL Tutorial – Class 4, Part 1 | SELECT DISTINCT | WHERE | COUNT
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PostgreSQL Tutorial – Class 4, Part 1 | SELECT DISTINCT | WHERE | COUNT
Welcome to Class 4 (Part 1) of our PostgreSQL tutorial series! 🚀 In this lesson, we dive into three powerful SQL features: SELECT DISTINCT – eliminate duplicates from your query results WHERE – filter records with conditions COUNT – quickly count rows that match a condition By the end of this video, you’ll know how to clean, filter ...
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