Skill Topic · Cinematic

🧠 Topic 60: Advanced SQL — Window Functions, CTEs & Beyond!

⏮️ Previous: 59-SQL-For-DS | ⏭️ Next: 61-NoSQL-Databases 📂 Section 8: Big Data & Databases (59-66)

Overview

🧠 Topic 60: Advanced SQL — Window Functions, CTEs & Beyond! — Quick Facts

📌

' > ': e.name

Topic 1

🎯 Is Topic Me Kya Sikhenge?

📚 ` ╔═══════════════════════════════════════════════════════════════╗ ║ 🧠 ADVANCED SQL —…

Topic 2

📌 Window Functions — Kya Hai?

💡 ` ┌──────────────────────────────────────────────────────────────┐ │ WINDOW FUNCTION vs…

Topic 3

1️⃣ Ranking Window Functions

🎯 `sql -- ═══ ROW_NUMBER vs RANK vs DENSE_RANK ═══ SELECT name, department, salary,…

Topic 4

2️⃣ LAG & LEAD — Previous/Next Row

⭐ `sql -- ═══ LAG: previous row value ═══ -- Month-over-month revenue change SELECT month,…

Topic 5

3️⃣ Aggregate Window Functions

🔑 `sql -- ═══ Running Total ═══ SELECT order_date, amount, SUM(amount) OVER ( ORDER BY…

Topic 6

4️⃣ CTEs (Common Table Expressions)

✨ `sql -- ═══ Basic CTE ═══ WITH dept_stats AS ( SELECT dept_id, AVG(salary) AS avg_sal,…

Topic 7

5️⃣ Advanced Patterns

🌟 ` ┌──────────────────────────────────────────────────────┐ │ ADVANCED SQL PATTERNS │…

Topic 8

🐍 Full Python Class — AdvancedSQLEngine

💡

Window functions (ROW_NUMBER,…

🔑

Running totals & moving averages

⚡

CTEs (simple + recursive)

🎯

Pivoting & unpivoting

Topic 9

📊 Window Functions Quick Reference

📚 ` ┌────────────────┬──────────────────────────────────────────┐ │ Function │ Kya karta…

Topic 10

❓ Quiz Time! (5 MCQs)

💡

a) Koi difference nahi

🔑

b) ROW_NUMBER unique hota hai,…

⚡

c) RANK unique hota hai

🎯

d) Dono same hain

Quick Quiz

Quiz — Question 1

🧠 Topic 60: Advanced SQL — Window Functions, CTEs & Beyond! ka sabse sahi definition kya hai?

Complete! 🎉

🧠 Topic 60: Advanced SQL — Window Functions, CTEs & Beyond! Complete!

Aliens School · HIEN · Cinematic Knowledge

✅