How to Find Duplicate Records | SQL Data Analyst Interview Question | EP-22 | #dataanlysis #sql

In today’s video, we’re tackling one of the most frequently asked SQL interview questions — how to find duplicate records in a table.

This is a must-know concept for every Data Analyst, Data Engineer, or SQL Developer preparing for interviews.

🎯 What’s Inside This Video?

In this video, you’ll learn three different and effective approaches to identify duplicate records in SQL:

1️⃣ Using GROUP BY and HAVING Clause
2️⃣ Using Window Function (ROW_NUMBER, RANK, or COUNT OVER)
3️⃣ Using INNER JOIN

We’ll explain each method clearly with examples, so you can confidently handle this question in any interview.

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Most Asked SQL Data Analyst Interview Question Playlist:- • https://www.youtube.com/playlist?list=PLPvrzIek-mcw4Cu6VY5P6zGvFhOVgIrUm

Data Cleaning using SQL:- https://youtu.be/tvCTy-8YUFY

Data Analyst Project using MS Excel:- https://youtu.be/tvCTy-8YUFY

Python Project for Data Analysis - Exploratory Data Analysis EDA:- https://youtu.be/1tYrE1z5LlI

📌Script:-
CREATE TABLE EmployeeDetails (
EmployeeID INT PRIMARY KEY,
EmployeeName VARCHAR(100),
Department VARCHAR(50),
Email VARCHAR(100),
PhoneNumber VARCHAR(20),
Salary DECIMAL(10, 2)
);

INSERT INTO EmployeeDetails (EmployeeID, EmployeeName, Department, Email, PhoneNumber, Salary)
VALUES
(1, 'Ankit Raj', 'HR', 'ankit.raj@example.com', '9876543210', 50000.00),
(2, 'Priya Sharma', 'Finance', 'priya.sharma@example.com', '9123456789', 60000.00),
(3, 'Ankit Raj', 'HR', 'ankit.raj@example.com', '9876543210', 50000.00),
(4, 'Rohan Mehra', 'IT', 'rohan.mehra@example.com', '9988776655', 70000.00),
(5, 'Sneha Gupta', 'Finance', 'sneha.gupta@example.com', '9001122334', 65000.00),
(6, 'Priya Sharma', 'Finance', 'priya.sharma@example.com', '9123456789', 60000.00);

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Видео How to Find Duplicate Records | SQL Data Analyst Interview Question | EP-22 | #dataanlysis #sql канала ANKIT RAJ MISHRA