Skill Topic · Cinematic

📘 SQL ALTER TABLE - Table Me Changes Karna

ALTER TABLE se tum existing table me columns add, delete ya modify kar sakte ho — bina table dubara…

Overview

📘 SQL ALTER TABLE - Table Me Changes Karna — Quick Facts

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CustomerID: FirstName

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1: Anil

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2: Priya

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3: Ravi

Topic 1

📌 ALTER TABLE Kya Karta Hai?

📚 ` ALTER TABLE Capabilities: ┌──────────────────────────────────────────────────┐ │ │ │…

Topic 2

📌 Demo Table

💡 | CustomerID | FirstName | LastName | City | |-----------|-----------|---------|------| |…

Topic 3

📌 ADD Column

🎯 sql -- Naya column add karo ALTER TABLE Customers ADD Email VARCHAR(100); Result: |…

Topic 4

📌 DROP Column

⭐ sql -- Column delete karo ALTER TABLE Customers DROP COLUMN Email; ⚠️ WARNING: Column…

Topic 5

📌 MODIFY / ALTER Column (Data Type Change)

🔑 `sql -- MySQL: MODIFY keyword ALTER TABLE Customers MODIFY COLUMN FirstName VARCHAR(100);…

Topic 6

📌 RENAME Column

✨ `sql -- MySQL (8.0+): ALTER TABLE Customers RENAME COLUMN City TO Location; --…

Topic 7

📌 RENAME Table

🌟 `sql -- MySQL: ALTER TABLE Customers RENAME TO Clients; -- ya: RENAME TABLE Customers TO…

Topic 8

📌 ADD Constraint

🚀 `sql -- Primary Key add karo ALTER TABLE Customers ADD PRIMARY KEY (CustomerID); --…

Topic 9

📌 DROP Constraint

📚 `sql -- MySQL: DROP constraint specific syntax ALTER TABLE Customers DROP INDEX uc_email;…

Topic 10

📌 DEFAULT Value Add / Remove

💡 `sql -- MySQL: ADD default ALTER TABLE Customers ALTER City SET DEFAULT 'Unknown'; --…

Topic 11

📌 NOT NULL Add / Remove

🎯 `sql -- MySQL: ALTER TABLE Customers MODIFY COLUMN Email VARCHAR(100) NOT NULL; -- Remove…

Topic 12

📌 Complete ALTER TABLE Operations Summary

⭐ ` ALTER TABLE Operations: ┌──────────────────────────────────────────────────┐ │ │ │…

Topic 13

📌 Practical Example — Step by Step

🔑 `sql -- Step 1: Table banayi CREATE TABLE Students ( StudentID INT PRIMARY KEY, Name…

Topic 14

📌 Important Warnings ⚠️

✨ ` ALTER TABLE Cautions: ┌──────────────────────────────────────────────────┐ │ │ │ ⚠️…

Topic 15

✅ Summary

🌟 KEY POINTS: - ALTER TABLE ADD se naya column ya constraint add hota hai - ALTER TABLE…

Quick Quiz

Quiz — Question 1

📘 SQL ALTER TABLE - Table Me Changes Karna ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 SQL ALTER TABLE - Table Me Changes Karna ka '1' kya hai?

Complete! 🎉

📘 SQL ALTER TABLE - Table Me Changes Karna Complete!

Aliens School · HIEN · Cinematic Knowledge

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