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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What function would you use to count the total number of records?
💡 Hint: Remember, it gives you the headcount of records.
Question 2
Easy
What does the SUM function calculate?
💡 Hint: Think about adding up numbers.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What function would you use to find the total number of sales transactions?
- COUNT
- SUM
- AVG
💡 Hint: It’s used for headcounts.
Question 2
The HAVING clause is used to filter records before grouping.
- True
- False
💡 Hint: Associated with GROUP BY.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
How would you find out which products sold the most in the last month? Provide a SQL query example.
💡 Hint: Filter sales based on dates and group by product_id.
Question 2
Draft a SQL query using a GROUP BY and HAVING clause to find out how many support tickets are open for each priority level, and show only those levels with more than 5 tickets.
💡 Hint: Ensure to count and set a threshold for open tickets.
Challenge and get performance evaluation