SQL Interview Question:

SELECT employee_id, employee_name, department_id FROM employees WHERE department_id IN ( SELECT department_id FROM departments WHERE location = 'HYDERABAD' ); 🎯 Explanation: The subquery executes first and returns a list of department_ids The outer query filters employees whose department_id matches that list The subquery is non-correlated (it does not depend on the outer query) IN is used when the subquery returns multiple values Clean and easy to read — very common in interviews ✅ Perfect for: ✔️ SQL Interviews ✔️ Backend Developers ✔️ Java + Spring Boot Learners ✔️ Data Analysts ✔️ Reporting & Business Queries 👉 Save this post for SQL revision 👉 Follow @ashokitschool for more SQL + Java + Full Stack content #SQLInterviewQuestions #SQLTips #INOperator #SubquerySQL #NonCorrelatedSubquery #BackendDeveloper #JavaDeveloper #AshokIT #CodingInterview #LearnSQL #DatabaseConcepts #ProgrammingTips #JobReadySkills #FullStackDeveloper https://ashokitech.com/