AI Computer Science Academy · Faisalabad

SQL & Databases

JOIN three tables

Task 21 of 56 SQL Section 3 · Joins and subqueries
All tasks
Read first Task 21

JOIN three tables

Chain JOINs to connect students, courses and fees.

Task

Joining three tables means…

The editor already contains a starting point. Change it until every check passes — the Next task button unlocks when it does.

What you start with
SELECT students.name, courses.title, fees.amount FROM fees JOIN students ON students.id = fees.student_id JOIN courses ON courses.id = students.course_id;
Syntax reference
SELECT students.name, courses.title, fees.amount FROM fees JOIN students ON students.id = fees.student_id JOIN courses ON courses.id = students.course_id;

Read it, then write it yourself. Copy-paste teaches nothing.

The sample database
CREATE TABLE courses (id INTEGER PRIMARY KEY, title TEXT, monthly_fee INTEGER);
CREATE TABLE students (id INTEGER PRIMARY KEY, name TEXT, city TEXT, course_id INTEGER, joined TEXT);
CREATE TABLE fees (id INTEGER PRIMARY KEY, student_id INTEGER, month TEXT, amount INTEGER, paid INTEGER);

INSERT INTO courses VALUES (1,'Web Design',9000),(2,'Python',11667),(3,'JavaScript',11667),(4,'AI & Prompt Engineering',15000);
INSERT INTO students VALUES
 (1,'Sara','Faisalabad',2,'2026-01-12'),
 (2,'Ali','Faisalabad',1,'2026-01-20'),
 (3,'Hina','Jhumra',2,'2026-02-02'),
 (4,'Bilal','Faisalabad',4,'2026-02-15'),
 (5,'Ayesha','Sargodha',3,'2026-03-01'),
 (6,'Usman','Jhumra',1,'2026-03-11'),
 (7,'Zainab','Faisalabad',4,'2026-04-05'),
 (8,'Hamza','Faisalabad',3,'2026-04-19');
INSERT INTO fees VALUES
 (1,1,'2026-01',11667,1),(2,1,'2026-02',11667,1),
 (3,2,'2026-01',9000,1),(4,2,'2026-02',9000,0),
 (5,3,'2026-02',11667,1),(6,3,'2026-03',11667,0),
 (7,4,'2026-02',15000,1),(8,4,'2026-03',15000,1),
 (9,5,'2026-03',11667,0),
 (10,6,'2026-03',9000,1),(11,6,'2026-04',9000,0),
 (12,7,'2026-04',15000,0),
 (13,8,'2026-04',11667,1);
SQL 1 automatic check Section 3 · Joins and subqueries
Code editor Ctrl + Enter runs
Run your code to see the output and the checks.
Your result

Submit your code to see results

Write your code in the middle column and press Run code.

Checks on this task:

  • Check 1

Track progress

0 of 56 tasks complete

Next task unlocks when every check passes.

Sign in to keep your code and certificates.

Next task (pass every check first)