Day 22: SQL JOINS Explained | INNER, LEFT, RIGHT, FULL JOIN in PostgreSQL with Real Examples
Welcome to Day 22 of my 30-Day SQL Challenge!
Today’s focus was on JOINS — the most critical SQL concept for combining data from multiple tables 📊
🔍 What You'll Learn:
INNER JOIN – Match only common records
LEFT JOIN – Keep all records from the left table
RIGHT JOIN – Keep all from the right, match if possible
FULL OUTER JOIN – Keep everything, fill missing with NULL
Use cases in real-world analysis (customers + orders, employees + departments, etc.)
👨💻 Practiced in PostgreSQL using pgAdmin with sample datasets.
📌 Tools Used: PostgreSQL, pgAdmin
📅 #Day22 of #30DayDataChallenge
🎓 Perfect for: Data Analyst Beginners, SQL Learners, Job Seekers
📺 Channel: Tech With Nicks
🔒 All data used is fictional and for educational purposes only#Day22 #SQLJoins #INNERJOIN #LEFTJOIN #RIGHTJOIN #FULLJOIN #PostgreSQL #TechWithNicks #LearnSQL #pgAdmin #SQLChallenge #30DaySQLChallenge
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