How many questions are in this code quiz?

This code quiz has 7 questions at intermediate difficulty. Each question includes an explanation so you learn as you go.

Is this code quiz free to take?

Yes. You can take this code quiz for free on SkillDojo AI, and generate your own on any topic in seconds with AI.

7 questionsintermediateAI-generated, may contain errors. Learn more

About this code quiz

This quiz tests knowledge of SQL subqueries and Common Table Expressions (CTEs) through practical query completion and output prediction.

Complete the query to return the department name and the number of employees in each department using a CTE.
Fill in the blank to select employees who earn more than the average salary across all employees.
Given the following query, what will be its output?
What is the output of the following query?
This query is supposed to select all departments with more than 5 employees, but it returns an error. Identify the bug.

What does the "Sql: Subqueries & Ctes" code quiz cover?: This quiz tests knowledge of SQL subqueries and Common Table Expressions (CTEs) through practical query completion and output prediction.
How many questions are in this code quiz?: This code quiz has 7 questions at intermediate difficulty. Each question includes an explanation so you learn as you go.
Is this code quiz free to take?: Yes. You can take this code quiz for free on SkillDojo AI, and generate your own on any topic in seconds with AI.

0:00