📊 SQL Interview Questions for Data Analysts

A curated collection of 120 SQL interview questions with answers designed for Data Analysts, Power BI Developers, and BI professionals.

This repository covers fundamental SQL concepts, advanced querying techniques, and real-world BI scenarios commonly asked in technical interviews.

---

🚀 Topics Covered

📌 SQL Basics & Fundamentals
📌 SELECT Queries & Filtering
📌 Sorting & Limiting Data
📌 Aggregate Functions
📌 GROUP BY & HAVING
📌 Joins
📌 Subqueries & Nested Queries
📌 Window Functions
📌 Date & Time Functions
📌 Data Cleaning & NULL Handling
📌 Performance Optimization
📌 SQL + Power BI Scenarios

---

🎯 Who is this for?

✔ Data Analyst Interview Preparation
✔ Power BI Developers
✔ SQL Beginners
✔ Data Analytics Students
✔ Anyone learning SQL for analytics

---

🧠 Example SQL Interview Question

What is SQL?

SQL (Structured Query Language) is used to retrieve, manage, and analyze data stored in relational databases.

SELECT name, salary
FROM employees
WHERE department = 'Sales';

---

📚 What you will learn

• Writing efficient SQL queries
• Understanding joins and subqueries
• Working with window functions
• Handling real-world data cleaning problems
• Preparing SQL queries for Power BI dashboards

---

⭐ Support this repository

If this repository helps you:

⭐ Give it a star 👤 Follow for more data analytics content

Your support helps grow the data analytics learning community.

---

📢 Connect & Learn More

Topics you’ll find here:

• SQL
• Data Analytics
• Power BI
• Interview Preparation
• Data Cleaning
• BI Reporting

---

💡 Tip: Use this repo as a daily SQL interview revision guide.

---