Challenges
Featured Challenges
Selecting Salaries
Easy
Joining Departments
Medium
Advanced Aggregations
Hard
All Challenges
| Title | Difficulty | Description | |
|---|---|---|---|
| Selecting Salaries | Practice writing simple SELECT queries. | ||
| Joining Departments | Combine data from multiple tables using JOINs. | ||
| Advanced Aggregations | Master complex aggregations and grouping operations. | ||
| Filtering Records by Date | Learn to filter records based on a date range. | ||
| Top Customers by Spending | Identify the customers who have spent the most money. | ||
| Group By Product Category | Use GROUP BY to summarize data by category. | ||
| Counting Employees per Department | Use COUNT and GROUP BY to summarize data. | ||
| Calculating Total Sales | Practice using aggregate functions to calculate totals. | ||
| Average Salary by Department | Use GROUP BY to calculate averages by department. | ||
| Customer Orders | Learn how to join tables and group data. | ||
| Employees with Salaries Above Average | Use subqueries to filter results based on an average. | ||
| Products Above Average Price | Practice filtering results based on a calculated average. | ||
| Highest Spending Customer | Use aggregate functions and joins to calculate total spending per customer. |