🔥TCS SQL Interview Question | 2 Best Ways To Solve It | SQL Tutorial | Step-by-Step Solution
Learn SQL with our comprehensive SQL tutorial, designed to help you master SQL basics and ace your next SQL interview.
In this video, we'll be discussing a common TCS SQL interview question and providing two step-by-step solutions to solve it. Our SQL tutorial is perfect for beginners and experienced learners alike, covering essential SQL concepts such as SQL query, SQL join, and SQL functions.
Whether you're looking to learn SQL for data analysis, data science, or as a data engineer, our video will provide you with valuable insights and tips to improve your SQL coding skills. With our SQL tutorial, you'll be able to learn SQL fast and gain the data skills you need to succeed in your career.
We'll also be touching on how SQL is used in data analysis and data science, and how it can be combined with programming languages like Python for data analysis and data engineering tasks. By the end of this video, you'll have a solid understanding of SQL basics and be able to apply your knowledge to solve complex SQL interview questions and real-world problems.
Timestamp:
0:00 - Problem Statement
0:44 - Approach 1 ( CASE + CTE)
05:40 - Approach 2 (SELF JOIN + CTE)
11:20 - CTA (Subscribe + Like if Helpful :))
👉 If you’re preparing for SQL interviews, TCS, Infosys, Wipro, Accenture, or FAANG interviews, this video is a must-watch!
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DATASET
create table routes (
source_city VARCHAR(50),
destination_city VARCHAR(50)
);
insert into routes (source_city, destination_city) values
('Delhi', 'Hyderabad'),
('Hyderabad', 'Delhi'),
('Bangalore', 'Mumbai'),
('Mumbai', 'Bangalore'),
('Kolkata', 'Pune'),
('Pune', 'Kolkata');
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