Skill Topic · Cinematic

📘 SQL Views - Virtual Tables Banana

VIEW ek virtual table hai jo SELECT query ka stored result hai — asli data store nahi karta, query…

Overview

📘 SQL Views - Virtual Tables Banana — Quick Facts

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Feature: Table

🎯

Data storage: Disk pe stored

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CREATE: CREATE TABLE

🔑

Performance: Direct access

Topic 1

📌 VIEW Kya Hai?

📚 VIEW ek named SELECT query hai jo ek virtual table ki tarah kaam karti hai. View me data…

Topic 2

📌 CREATE VIEW Syntax

💡 `sql CREATE VIEW view_name AS SELECT column1, column2, ... FROM table_name WHERE…

Topic 3

📌 Basic View Example

🎯 `sql -- Indian customers ka view: CREATE VIEW IndianCustomers AS SELECT CustomerID,…

Topic 4

📌 View with JOIN

⭐ `sql -- Customer orders ka detailed view: CREATE VIEW CustomerOrders AS SELECT…

Topic 5

📌 View with Aggregates

🔑 `sql -- Monthly sales summary view: CREATE VIEW MonthlySales AS SELECT YEAR(OrderDate) AS…

Topic 6

📌 CREATE OR REPLACE VIEW

✨ `sql -- View update karo (replace): CREATE OR REPLACE VIEW IndianCustomers AS SELECT…

Topic 7

📌 DROP VIEW

🌟 `sql -- View delete karo: DROP VIEW IndianCustomers; -- Safe drop: DROP VIEW IF EXISTS…

Topic 8

📌 Updatable Views (INSERT/UPDATE/DELETE through View)

🚀 Kuch views me directly data modify kar sakte ho: `sql -- Simple view (updatable): CREATE…

Topic 9

📌 WITH CHECK OPTION

📚 `sql -- View me sirf allowed data INSERT/UPDATE ho: CREATE VIEW IndianCustomers AS SELECT…

Topic 10

📌 VIEW vs Table

💡 | Feature | Table | View | |---------|-------|------| | Data storage | Disk pe stored |…

Topic 11

📌 Why Use Views?

🎯 ` View Benefits: ┌──────────────────────────────────────────────────┐ │ │ │ 1.…

Topic 12

📌 Security View — Hide Sensitive Data

⭐ `sql -- Full table has: Salary, SSN, etc. -- Public view: sensitive columns hidden CREATE…

Topic 13

📌 Indexed/Materialized Views

🔑 `sql -- SQL Server: Indexed View (materializes data) CREATE VIEW SalesSummary WITH…

Topic 14

✅ Summary

✨ KEY POINTS: - VIEW ek virtual table hai — SELECT query store karta hai, data nahi -…

Comparison

📌 VIEW vs Table

⚖️

Data storage: Disk pe stored

⚖️

CREATE: CREATE TABLE

⚖️

Performance: Direct access

Quick Quiz

Quiz — Question 1

📘 SQL Views - Virtual Tables Banana ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 SQL Views - Virtual Tables Banana ka 'Data storage' kya hai?

Complete! 🎉

📘 SQL Views - Virtual Tables Banana Complete!

Aliens School · HIEN · Cinematic Knowledge

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