Coding Interview Resources

⭕ ACCENTURE Interview Experience ⭕ 1) Introduce YourSelf Along With Projects, College Life, Family BackGround and your Passion Briefly? 2) Tell Me About Your Project? 3) Tools and Technologies Used in the Project? 4) Team Project or Individual Project? 5) About Contribution in Project? 6) Real-Time Applications of Project? 7) What is the Feedback of Your Project? 8) Tell Me About your Strengths? 9) About Career Gap if any? 10) What Are Technologies you are good at? 11) About hobbies? 12) Any questions?

✅ SQL Functions Interview Questions with Answers 🎯📚 1️⃣ Q: What is the difference between COUNT(*) and COUNT(column_name)? A: - COUNT(*) counts all rows, including those with NULLs. - COUNT(column_name) counts only rows where the column is NOT NULL. 2️⃣ Q: When would you use GROUP BY with aggregate functions? A: Use GROUP BY when you want to apply aggregate functions per group (e.g., department-wise total salary):

SELECT department, SUM(salary) FROM employees GROUP BY department;

3️⃣ Q: What does the COALESCE() function do? A: COALESCE() returns the first non-null value from the list of arguments. Example:

SELECT COALESCE(phone, 'N/A') FROM users;

4️⃣ Q: How does the CASE statement work in SQL? A: CASE is used for conditional logic inside queries. Example:

SELECT name,  
  CASE  
    WHEN score >= 90 THEN 'A'  
    WHEN score >= 75 THEN 'B'  
    ELSE 'C'  
  END AS grade  
FROM students;

5️⃣ Q: What’s the use of SUBSTRING() function? A: It extracts a part of a string. Example:

SELECT SUBSTRING('DataScience', 1, 4); -- Output: Data

6️⃣ Q: What’s the output of LENGTH('SQL')? A: It returns the length of the string: 3 7️⃣ Q: How do you find the number of days between two dates? A: Use DATEDIFF(end_date, start_date) Example:

SELECT DATEDIFF('2026-01-10', '2026-01-05'); -- Output: 5

8️⃣ Q: What does ROUND() do in SQL? A: It rounds a number to the specified decimal places. Example:

SELECT ROUND(3.456, 2); -- Output: 3.46

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