How to use Union, Union all & Grouping Sets | Question 16 | Business Analyst SQL Interview

Welcome to my channel, dedicated to helping Business Analysts, Data Analysts, and Product Analysts prepare for job interviews. In this video, we will be walking through an SQL Question concept named UNION, UNION ALL and GROUPING SETS

We will explain what these terms mean and how they can be used to solve complex SQL problems.

Throughout the video, we will guide you through the problem step-by-step, providing clear and concise explanations of the concepts we are using. By the end of this video, you will have a solid understanding of how to solve problems like this.

Whether you are preparing for an upcoming interview or simply looking to enhance your SQL skills, this video is a valuable resource that you won’t want to miss. So sit back, relax, and let’s dive into the world of advanced SQL together!

Table Creation query.

CREATE TABLE transactions (
city VARCHAR(50),
dt DATE,
amount DECIMAL(10, 2)
);

INSERT INTO transactions (city, dt, amount)
VALUES
(‘Delhi’, ‘2023-04-01’, 100.50),
(‘Bangalore’, ‘2023-04-01’, 75.20),
(‘Chennai’, ‘2023-04-01’, 120.10),
(‘Mumbai’, ‘2023-04-01’, 85.80),
(‘Delhi’, ‘2023-04-02’, 200.00),
(‘Bangalore’, ‘2023-04-02’, 150.25),
(‘Chennai’, ‘2023-04-02’, 90.75),
(‘Mumbai’, ‘2023-04-02’, 175.30),
(‘Delhi’, ‘2023-04-03’, 80.90),
(‘Bangalore’, ‘2023-04-03’, 110.00),
(‘Chennai’, ‘2023-04-03’, 60.50),
(‘Mumbai’, ‘2023-04-03’, 95.40),
(‘Delhi’, ‘2023-04-04’, 125.75),
(‘Bangalore’, ‘2023-04-04’, 95.60),
(‘Chennai’, ‘2023-04-04’, 150.00),
(‘Mumbai’, ‘2023-04-04’, 120.80),
(‘Delhi’, ‘2023-04-05’, 70.25),
(‘Bangalore’, ‘2023-04-05’, 140.50),
(‘Chennai’, ‘2023-04-05’, 110.80),
(‘Mumbai’, ‘2023-04-05’, 200.00);

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