Futurense Technologies Data Engineer Interview Questions and Answers

Q1. Sql - List top 3 youngest ages of employees dept wise
Ans. 
List top 3 youngest ages of employees dept wise using SQL.
• Use GROUP BY to group employees by department.

• Use ORDER BY to sort ages in ascending order.

• Use LIMIT to get top 3 youngest ages.

• Use MIN to get the youngest age in each department.
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Q2. Sql - List employees whose age is greater than average age of all employees
Ans. 
List employees whose age is greater than average age of all employees using SQL.
• Calculate the average age of all employees using AVG() function.

• Use WHERE clause to filter out employees whose age is greater than the average age.

• Join the employee table with the age table to get the age of each employee.

• Example: SELECT * FROM employees WHERE age > (SELECT AVG(age) FROM employees);
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Q3. Python - sum of digits till the result becomes single digit Ex: 479 - 20 - 2
Ans. 
Python program to find the sum of digits till the result becomes a single digit.
• Convert the number to a string and iterate through each digit.

• Add the digits and store the result.

• Repeat the process until the result becomes a single digit.

• Return the single digit result.
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Q1. Basic HR questions like why futurense, qualities that get you into futurense
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Mettel Python SQL general python

Q1. Sql concepts some queries on window functions
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Q1. They asked me questions on python and mysql , after that they had asked my project and told me to do some modification
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Q1. Why should we hire you?
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Q2. Where do you see yourself in 5 years?
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Q3. What are your strengths and weaknesses?
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Q4. Tell me about yourself.
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2 python questions
2 SQL questions
5 MCQ questions

Q1. Basic SQL questions Acid property Difference between Varchar and char Join questions
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Q1. Share details of your previous job.
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Q2. Why are you looking for a change?
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Q3. Tell me about yourself.
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