Learn SQL

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1.Talk to a Table

Say “Hello” to the Table Quiz: Say “Hello” to the Table Challenge: Say “Hello” to the Table Pick the Columns You Want Quiz: Pick the Columns You Want Challenge: Pick the Columns You Want Find the Rows That Matter Quiz: Find the Rows That Matter Problem: Find the Rows That Matter Use Comparisons and Logic Quiz: Use Comparisons and Logic Problem: Use Comparisons and Logic Sort the Answers Quiz: Sort the Answers Problem: Sort the Answers Problem: Help a Pet Lover

Mock Interview

SQL Personalized Practice for Beginners

2.Ask Better Questions

Do Math with Your Data Quiz: Do Math with Your Data Problem: Do Math with Your Data Group Things Together Quiz: Group Things Together Problem: Group Things Together Only Keep Interesting Groups Quiz: Only Keep Interesting Groups Problem: Only Keep Interesting Groups Ask Questions About Questions Quiz: Ask Questions About Questions Problem: Ask Questions About Questions Project: Find the Top Performers

3.Create Your Own World

Create a Table Quiz: Create a Table Challenge: Create a Table Add Some Data Quiz: Add Some Data Problem: Add Some Data Fix Mistakes Quiz: Fix Mistakes Problem: Fix Mistakes Design Better Tables Quiz: Design Better Tables Problem: Design Better Tables Project: Build a Student Tracker

4.Connect the Dots

Meet the JOIN Family Quiz: Meet the Join Family Problem: Meet the JOIN Family Connect Two Tables Quiz: Connect Two Tables Problem: Connect Two Tables Go Multi-Level Quiz: Go Multi-Level Problem: Go Multi-Level Build a Mini Dashboard Problem: Build a Mini Dashboard Project: Library Tracker Problem: Compute Student CGPA Project: Build a Game Leaderboard

5.Learning SQL in the Age of AI

Writing Clear Prompts Reading SQL Output for Insight Planning Multi-Step Queries Safe SQL Habits and Preventing Dangerous Operations Capstone: Your Personal Budget Tracker What’s next?

Quiz: Do Math with Your Data

Solve the quiz using SQL aggregate functions like COUNT, SUM, AVG, MIN, and MAX.

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What’s next?

In the last lesson, you explored how to use aggregate functions in SQL to get meaningful insights from your data. You practiced using COUNT, SUM, AVG, MIN, and MAX to calculate totals, averages, and more, all directly from the table.

Let’s see how well you understand these powerful functions!