Skill Topic · Cinematic

📊 Topic 08: JOINs — Tables Ko Jodo!

"The real power of SQL lies in JOINs." — Every Database Engineer "Ek table me students hain, dusri…

Overview

📊 Topic 08: JOINs — Tables Ko Jodo! — Quick Facts

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customer: product

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Rahul: Laptop

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Rahul: Mouse

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Priya: Keyboard

Topic 1

Setup: Practice Tables

📚 `sql -- ═══════════════════════════════════════════ -- JOIN practice ke liye tables banao…

Topic 2

1. JOINs Kya Hain?

💡 JOIN = 2 ya zyada tables ko ek saath connect karna based on a common column. `…

Topic 3

2. INNER JOIN — Common Data

🎯 INNER JOIN = Sirf wahi rows jahan DONO tables me match ho. `sql --…

Topic 4

3. LEFT JOIN — Sab Left Se + Matching Right

⭐ LEFT JOIN = Left table ki SAB rows + right table se matching rows. No match = NULL. `sql…

Topic 5

4. RIGHT JOIN — Sab Right Se + Matching Left

🔑 RIGHT JOIN = Right table ki SAB rows + left table se matching. Opposite of LEFT JOIN.…

Topic 6

5. FULL OUTER JOIN — Sab Kuch

✨ FULL OUTER JOIN = Dono tables ke SAARE rows. Match ho ya na ho! ⚠️ MySQL me FULL OUTER…

Topic 7

6. CROSS JOIN — Sab Combinations

🌟 CROSS JOIN = Har row ko har row ke saath jodo (Cartesian Product). A me 3 rows × B me 4…

Topic 8

7. SELF JOIN — Table Apne Se Jode

🚀 SELF JOIN = Ek table ko khud se join karo! Employee-Manager relationship me bahut useful.…

Topic 9

8. Multiple JOINs — 3+ Tables

📚 3 Tables Join: `sql -- ═══════════════════════════════════════════ -- Student → Marks →…

Topic 10

9. JOINs with Aggregates

💡 Customer Order Summary: `sql -- ═══════════════════════════════════════════ -- Har…

Topic 11

10. Key Points

🎯 ` ╔══════════════════════════════════════════════════════╗ ║ 📝 KEY POINTS ║…

Topic 12

📝 Practice Exercises

⭐ Exercise 1: Basic JOINs 1. Customers + Orders → INNER JOIN (sirf ordered customers) 2.…

Topic 13

🧭 Navigation

🔑 | Previous | Index | Next | |----------|-------|------| | ← Functions & Aggregates | 📚…

Quick Quiz

Quiz — Question 1

📊 Topic 08: JOINs — Tables Ko Jodo! ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📊 Topic 08: JOINs — Tables Ko Jodo! ka 'Rahul' kya hai?

Complete! 🎉

📊 Topic 08: JOINs — Tables Ko Jodo! Complete!

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