Skill Topic · Cinematic

📊 Topic 05: UPDATE & DELETE — Data Badlo Aur Mitao!

"With great power comes great responsibility — especially with DELETE!" — Every DBA "Data daala,…

Overview

📊 Topic 05: UPDATE & DELETE — Data Badlo Aur Mitao! — Quick Facts

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Previous: Index

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[← SELECT Queries](./04_SQL_SelectQueries.md): 📚 Course Index

Topic 1

1. UPDATE — Data Badlo

📊 Basic Syntax: `sql UPDATE table_name SET column1 = new_value1, column2 = new_value2 WHERE…

Topic 2

2. UPDATE Multiple Columns

💾 Ek hi query me kayi columns badlo: `sql -- ═══════════════════════════════════════════ --…

Topic 3

3. UPDATE with Calculations

🗄️ Math Operations: `sql -- ═══════════════════════════════════════════ -- Sabke marks me 5…

Topic 4

4. UPDATE with Conditions

📈 Multiple Conditions (AND/OR): `sql -- ═══════════════════════════════════════════ --…

Topic 5

5. DELETE — Data Mitao

🔍 Basic Syntax: sql DELETE FROM table_name WHERE condition; `…

Topic 6

6. DELETE with Conditions

📉 Multiple Conditions: `sql -- ═══════════════════════════════════════════ -- Inactive…

Topic 7

7. TRUNCATE vs DELETE

🧮 ` ┌──────────────────────────────────────────────────────┐ │ DELETE vs TRUNCATE │…

Topic 8

8. Safe UPDATE/DELETE — Best Practices

🌐 Rule 1: Pehle SELECT Karo, Phir UPDATE/DELETE `sql --…

Topic 9

9. Practical Examples

📊 Example 1: E-Commerce Price Update `sql -- ═══════════════════════════════════════════ --…

Topic 10

10. Key Points

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

Topic 11

📝 Practice Exercises

🗄️ Exercise 1: Safe Update 1. Pehle SELECT se dekho: kaunse students Delhi se hain? 2. Unke…

Topic 12

🧭 Navigation

📈 | Previous | Index | Next | |----------|-------|------| | ← SELECT Queries | 📚 Course…

Quick Quiz

Quiz — Question 1

📊 Topic 05: UPDATE & DELETE — Data Badlo Aur Mitao! ka sabse sahi definition kya hai?

Complete! 🎉

📊 Topic 05: UPDATE & DELETE — Data Badlo Aur Mitao! Complete!

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