Class 12 Computer Science | SQL Complete One Shot | Unit 3 Data Handling | BOARDS 2025-26

Hi everyone, Hope everyone is doing great :)
In this video, I have covered -

💡 Class: 12th
💡 Subject: Computer Science
💡 Chapter: SQL
💡 Topics: Structured Query Language - Complete Chapter
💡 Notes: https://www.youth-af.com/class..../class-12/computer_s

--------------------------------------------------------

Topics covered in this video:-

0:00 Chapter Introduction & CBSE Syllabus 2025-26
0:55 What is SQL (Structured Query Language)?
1:46 SQL vs MySQL: The Detailed Difference (Analogy)
3:37 How Data is Stored in a Relational Database (Tables, Rows, Columns)
4:42 SQL Data Types: INT, FLOAT, DATE, and Text
5:39 Key Difference Between CHAR vs VARCHAR (Memory Management)
7:03 SQL Practical Start: DDL Commands
7:15 Creating a Database: CREATE DATABASE Syntax
8:02 Creating a Table Structure: CREATE TABLE Syntax
10:37 Inserting Data: INSERT INTO Command
12:51 Inserting Missing Values (NULL Handling)
14:12 Categories of SQL Commands: DDL, DML, DQL (Full Forms)
14:56 Database Terminologies Revision: Relation, Attribute, Tuple
15:27 Keys Revision: Primary Key, Candidate Key, Alternate Key
16:36 Setting Up Constraints in a Table
17:41 Using Primary Key, NOT NULL, CHECK, and DEFAULT Constraints
21:37 Modifying Table Structure: ALTER TABLE ADD Column
22:54 Deleting a Column: ALTER TABLE DROP Column
23:46 Deleting a Table and Database: DROP TABLE / DROP DATABASE
25:11 SELECT Command: Data Query Language (DQL)
25:46 Displaying All Data: SELECT All (Star) From Table
26:43 Using the WHERE Clause for Conditional Filtering
28:27 Displaying Specific Columns Only
30:50 Using BETWEEN and AND Keywords (Range-Based Filtering)
33:44 Using the OR Clause for Multiple City Conditions
35:22 Shortcut for Multiple Conditions: IN Operator
35:05 IN Operator
35:40 - Syntax: WHERE Column IN
36:07 - Pattern Matching with LIKE
36:44 - Wildcard: Percentage (%)
37:36 - Pattern Example 1
38:40 - Wildcard: Underscore
39:18 - % vs. _ Distinction
40:16 - Pattern Example 2
41:33 - Aggregate Functions
41:45 - COUNT(*)
42:23 - MAX() and MIN()
43:30 - GROUP BY Clause
43:48 - GROUP BY City Example
44:52 - Sorting with GROUP BY
45:24 - Handling Unknown Values: NULL
45:55 - IS NULL and IS NOT NULL
47:00 - Column Aliasing with AS
47:47 - Aliasing Example
48:15 - Removing Duplicates: DISTINCT
48:46 - SELECT DISTINCT Syntax
50:10 - DML: UPDATE Command
50:33 - UPDATE... SET... WHERE Syntax
51:27 - DML: DELETE Command
51:48 - DELETE FROM... WHERE Syntax
52:38 - Sorting Output: ORDER BY
53:23 - Ascending Order
53:42 - Descending Order
54:13 - Set Operations Introduction
54:53 - Set: UNION
56:44 - Set: INTERSECTION
57:34 - Set: MINUS (Difference)
58:53 - Cartesian Product
1:00:58 - Cartesian Row Count
1:01:21 - JOIN Operations
1:02:49 - JOIN using WHERE Clause (Equi Join)
1:05:27 - JOIN using JOIN...ON Syntax
1:06:02 - Syllabus Review

━━━━━━━━━━━━━━━━━

Connect with me 📱 :
Instagram : https://www.instagram.com/ayush.poddar/
Twitter (X) : https://x.com/AyushPoddar2003
LinkedIn : https://in.linkedin.com/in/ayushpoddarcodes
GitHub : https://github.com/Ayush-Poddar-2003
Website : https://www.youth-af.com/

━━━━━━━━━━━━━━━━━

🧠 Resources & Tools I Use:
Mic: https://amzn.to/47SwTYz
Keyboard: https://amzn.to/4qzFsPv
Mouse: https://amzn.to/3JC1IaB
External Monitor: https://amzn.to/3LbZj7f

━━━━━━━━━━━━━━━━━

💼 For Business / Collaboration:
📧 Email : ayushpoddar1603@gmail.com

Support us by SUBSCRIBING ;)
Do Like, Comment & Share our Tutorials 🔔


Thank You ♥️
class 12 cs sql, sql class 12 cs, sql in class 12 cs, sql class 12, class 12 sql, class 12 cs, sql class 12 ip, class 12 ip sql, mysql & sql in class 12, sql and mysql class 12, cs class 12 class, class 12 sql full, cs class 12, mysql class 12, class 12 mysql, class 12 cs sql one shot revision explained, class 12 cs prep, sql class 12 python, class 12 cs chapter 9 sql one shot revision, sql queries class 12, sql class 12 one shot, sql one shot class 12, sql class 12 revision, complete sql class 12, class 12 cs one shot