Skill Topic · Cinematic

📘 SQL Self Join - Table Apne Aap Se Join

Self Join me ek table apne aap ke saath join hoti hai — jaise employees table me manager dhundhna! 🔁

Overview

📘 SQL Self Join - Table Apne Aap Se Join — Quick Facts

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EmployeeID: EmployeeName

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1: Ahmed Khan

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2: Sara Ali

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3: Raj Kumar

Topic 1

📌 Self Join Kya Hai?

📚 Self Join me ek table ko khud ke saath join karte hain. Iske liye table ko do alag…

Topic 2

📌 Self Join Syntax

💡 `sql SELECT a.column, b.column FROM table_name AS a JOIN table_name AS b ON a.column =…

Topic 3

📌 Demo Database — Employees

Topic 4

📌 Employee Ka Manager Dhundho

⭐ `sql -- Har employee ke saath uska manager dikhao SELECT e.EmployeeName AS Employee,…

Topic 5

📌 CEO (Top Manager) Bhi Dikhao — LEFT JOIN

🔑 `sql -- LEFT JOIN se sab employees aayenge (CEO bhi) SELECT e.EmployeeName AS Employee,…

Topic 6

📌 Same City Ke Employees Dhundho

✨ `sql -- Woh employees jo SAME city me hain (apne aap ko exclude) SELECT a.EmployeeName AS…

Topic 7

📌 Customers — Same Country Ke Customers

🌟 `sql -- Demo: Customers table -- Same country ke alag alag customers dhundho SELECT…

Topic 8

📌 Self Join Use Cases

🚀 ` Common Self Join Patterns: ┌──────────────────────────────────────────────────┐ │ │ │…

Topic 9

📌 Sequential Comparison

📚 `sql -- Consecutive orders ka amount compare karo SELECT a.OrderID AS Order1, a.Amount AS…

Topic 10

📌 Self Join Key Rules

💡 | Rule | Description | |------|-------------| | Aliases mandatory | Bina alias ke SQL…

Topic 11

✅ Summary

🎯 KEY POINTS: - Self Join = table apne aap ke saath join hoti hai - Do aliases zaroori hain…

Quick Quiz

Quiz — Question 1

📘 SQL Self Join - Table Apne Aap Se Join ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 SQL Self Join - Table Apne Aap Se Join ka '1' kya hai?

Complete! 🎉

📘 SQL Self Join - Table Apne Aap Se Join Complete!

Aliens School · HIEN · Cinematic Knowledge

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