✅ SQL Interview Challenge! 🧠💻

𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄𝗲𝗿: Retrieve all employees along with their department names. Only include employees who belong to a department.

𝗠𝗲: Using INNER JOIN:

SELECT e.name AS employee_name,
       d.dept_name AS department_name
FROM employees e
INNER JOIN departments d
ON e.dept_id = d.dept_id;

✔ Why it works:
– INNER JOIN returns only rows with matching values in both tables based on the ON condition, excluding employees without a dept_id match (or vice versa).
– This ensures we get complete, valid pairs—perfect for reports focusing on assigned staff, and it's efficient for large datasets in 2025's analytics tools.

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