SQL LEFT JOIN vs RIGHT JOIN 🔍 See the Full Picture

Mastering SQL in 30 Days – Day 13

Only seeing matching data isn’t always enough — sometimes you need the full picture.
That’s where LEFT JOIN and RIGHT JOIN come into play.

In this video:

What is LEFT JOIN? What is RIGHT JOIN?

Difference between INNER, LEFT & RIGHT JOINs

How to retrieve unmatched data from either table

Real-world example with students and fees tables

💡 Sample Queries:

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Edit
-- LEFT JOIN: All students, even if no fee data
SELECT students.name, fees.amount
FROM students
LEFT JOIN fees ON students.id = fees.student_id;

-- RIGHT JOIN: All fee records, even if student missing
SELECT students.name, fees.amount
FROM students
RIGHT JOIN fees ON students.id = fees.student_id;
📌 Use LEFT JOIN when your priority is the left table (e.g. all students),
and RIGHT JOIN when your priority is the right table (e.g. all transactions).

🎯 Kal: FULL JOIN — the complete picture!

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