Skill Topic · Cinematic

📘 SQL SELECT DISTINCT - Unique Data Nikalna

DISTINCT se tum duplicate values hata ke sirf unique (alag alag) values nikal sakte ho! 🎯

Overview

📘 SQL SELECT DISTINCT - Unique Data Nikalna — Quick Facts

📌

CustomerID: CustomerName

🎯

1: Ahmed Electronics

⚡

2: Sara Boutique

🔑

3: Raj Traders

Topic 1

📌 SELECT DISTINCT Kya Hai?

📊 Normally SELECT saare records laata hai — chahe duplicate hon ya nahi. Lekin SELECT…

Topic 2

📌 SELECT DISTINCT Syntax

💾 sql SELECT DISTINCT column1, column2, ... FROM table_name;

Topic 3

📌 Demo Database

Topic 4

📌 Without DISTINCT (Duplicates Ke Saath)

📈 sql -- Saare countries nikalo (duplicates bhi aayenge) SELECT Country FROM Customers; …

Topic 5

📌 With DISTINCT (Sirf Unique Values)

🔍 sql -- Sirf unique countries nikalo SELECT DISTINCT Country FROM Customers; Result: |…

Topic 6

📌 DISTINCT with COUNT

📉 Kitni unique values hain yeh count karne ke liye COUNT(DISTINCT column) use karo: `sql --…

Topic 7

📌 DISTINCT Multiple Columns Pe

🧮 Jab tum 2 ya zyada columns pe DISTINCT use karo, to combination unique hoga: `sql -- City…

Topic 8

📌 DISTINCT vs No DISTINCT - Comparison

🌐 `sql -- Without DISTINCT SELECT Country FROM Customers; -- Result: 6 rows (duplicates…

Topic 9

📌 Kab DISTINCT Use Karna Chahiye?

📊 | Situation | Kya Karein | |-----------|-----------| | Unique categories dekhni hain |…

Topic 10

⚠️ MS Access Me Note

💾 MS Access me COUNT(DISTINCT column) directly kaam nahi karta. Workaround: `sql -- MS…

Topic 11

✅ Summary

🗄️ KEY POINTS: - SELECT DISTINCT sirf unique values return karta hai - Duplicates…

Quick Quiz

Quiz — Question 1

📘 SQL SELECT DISTINCT - Unique Data Nikalna ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 SQL SELECT DISTINCT - Unique Data Nikalna ka '1' kya hai?

Complete! 🎉

📘 SQL SELECT DISTINCT - Unique Data Nikalna Complete!

Aliens School · HIEN · Cinematic Knowledge

✅