Course/Module 3/Topic 3 of 3Beginner

SQL Joins & Relationships - Practice

Put your sql joins & relationships skills to the test with practical exercises and challenges.

50 min•By Priygop Team•Last updated: Feb 2026

Hands-On Practice

Practice makes perfect! In this section, you'll work through practical exercises that reinforce the concepts covered in this module.

Exercises

Exercise 1: Apply basic sql joins & relationships concepts
Exercise 2: Solve intermediate-level challenges
Exercise 3: Build a mini-project using sql joins & relationships
Exercise 4: Debug and fix common issues

Practice: SQL Joins & Relationships

Practice: SQL Joins & RelationshipsJavaScript⚠ 1 error

⚠ Syntax Issues (1)

Line 1: JS Error: Unexpected identifier 'JOIN'

💡 Check syntax near the highlighted line.

JavaScript Editor

✕ 1 errorTab = 2 spaces

-- Practice JOIN queries
SELECT 
  s.student_name,
  c.course_name,
  g.grade
FROM students s
LEFT JOIN grades g ON s.id = g.student_id
LEFT JOIN courses c ON g.course_id = c.id
ORDER BY s.student_name, c.course_name;

Result

Click ▶ Run to see the result

Edit the code on the left, then click Run

JavaScript|9 lines|217 chars|1 error, 0 warnings

UTF-8

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