7 SQL Tricks to Boost Your Data Skills 📊

Looking to learn SQL fast? In this beginner-friendly SQL tutorial, I’ll show you 7 powerful SQL tricks that can instantly upgrade your data skills—perfect for anyone preparing for data analyst or data science roles.
These are the exact functions and patterns used in real-world jobs but rarely taught in basic tutorials. From CASE statements to window functions like ROW_NUMBER and LAG(), this video packs everything you need to know in just 5 minutes.

✅ What you’ll learn:
00:35 - How to use CASE WHEN for conditional logic
01:03 - Replace NULLs using COALESCE()
01:24 - Ranking and analyzing with ROW_NUMBER() and LAG()
02:19 - Clean queries with CTEs (WITH clause)
02:59 - Subqueries inside SELECT
03:23 - Querying JSON data in PostgreSQL
03:43 - Boost Your SQL Performance with EXPLAIN

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💬 Drop a comment: Which SQL tip was new to you?
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