Aggregate Functions in SQL | COUNT, SUM, AVG, MIN, MAX Explained with Examples | Beginner Friendly скачать в хорошем качестве

Aggregate Functions in SQL | COUNT, SUM, AVG, MIN, MAX Explained with Examples | Beginner Friendly

In this video, you will learn Aggregate Functions in SQL with a complete theoretical and practical explanation using real examples. Aggregate functions in SQL are used to perform calculations on multiple rows of data and return a single summarized value. These functions are widely used in data analysis, reporting, dashboards, and real-world database applications. 00:00 – Introduction to Aggregate Functions 00:53 – COUNT() Function 02:46 – SUM() Function 04:02 – AVG() Function 05:20 – MIN() Function 06:15 – MAX() Function 07:12 – Aggregate Functions with WHERE & GROUP BY This video is specially designed for students, beginners, interview preparation, competitive exams, and anyone learning SQL or database management systems. 🔹 What Are Aggregate Functions in SQL? Aggregate functions operate on a set of rows and return one summarized result. They help answer questions like: How many records are there? What is the total sum? What is the average value? What is the minimum or maximum value? 🔹 Aggregate Functions Covered in This Video ✔ COUNT() – Count total rows, non-NULL values, and distinct values ✔ SUM() – Calculate total of numeric columns ✔ AVG() – Find average values ✔ MIN() – Get the smallest value ✔ MAX() – Get the largest value 🔹 Topics Explained with Examples ✔ COUNT(*) vs COUNT(column) ✔ COUNT(DISTINCT column) ✔ SUM() and AVG() with NULL values ✔ MIN() and MAX() on numeric data ✔ Aggregate functions with WHERE clause ✔ Aggregate functions with GROUP BY clause ✔ Real-world use cases using a student table 🔹 Example Table Used CREATE TABLE student ( id INT, name VARCHAR(50), dept VARCHAR(20), marks INT ); 🔹 Sample Queries Explained SELECT COUNT(*) FROM student; SELECT COUNT(DISTINCT dept) FROM student; SELECT SUM(marks) FROM student; SELECT AVG(marks) FROM student; SELECT MIN(marks) FROM student; SELECT MAX(marks) FROM student; 🔹 Who Should Watch This Video? ✔ Beginners learning SQL ✔ College students ✔ Database learners ✔ Interview & exam preparation ✔ Anyone interested in data analysis By the end of this video, you will clearly understand how aggregate functions work in SQL and how to use them correctly without making common mistakes. 🔹 Watch Till the End To Learn ✔ Aggregate functions with WHERE vs GROUP BY ✔ Handling NULL values ✔ Common interview questions ✔ Best practices in SQL 🔹 Next Videos in This SQL Series ➡ GROUP BY and HAVING in SQL ➡ SQL JOIN concepts ➡ Subqueries in SQL ➡ SQL Interview Questions 🔥 Hashtags (High-Reach & Relevant) #SQL #AggregateFunctions #SQLTutorial #SQLForBeginners #LearnSQL #Database #DBMS #MySQL #SQLQueries #SQLExamples #SQLFunctions #COUNT #SUM #AVG #MIN #MAX #DataAnalysis #DataAnalytics #SQLInterviewQuestions #SQLPractice #Programming #Coding #TechEducation #ComputerScience #StudentLife #ExamPreparation #InterviewPreparation #OnlineLearning #LearnProgramming