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SQL JOIN

5 lessons · 7:37 · updated 8/29/2026

Watch them in order, then explain the topic in your own words below.

Nobody with subject knowledge has checked this course yet. It was put together automatically.

What you will do in this course

  • What is Join
  • Write Inner Join
  • Advanced Join Types
  • Write Left Join
  • Join Mistake Avoidance
0 / 5 lessons watched

Getting started

1 lessons · short section, not a full path on its own

1. Inner Join vs Left Join Explained | SQL Tutorial for Beginners | SQL Joins Basics

What is Join

Ka-Dev Tips · watch the original · 1:00

Check yourself

Four questions on this section. Wrong answers are the point: each one explains itself.

Now you explain it

Close what you watched and explain the topic in your own words in 30 seconds. What you can explain is what you have learned. You are marked against this course's lessons and nothing beyond them.

Explain how you would do this: Getting started — What is Join.

You are judged on these, and nothing else in the course:

  • What is Join

Doing it properly

3 lessons

1. Use INNER JOINs in SQL to combine multiple tables to show only the records that match in both tables

Write Inner Join

Stephen | Data · watch the original · 0:58

2. SQL LEFT JOIN - SQL Tutorial

Write Left Join

Data with Baraa · watch the original · 3:31

3. Inner vs Outer vs Left vs Right Joins in SQL

Join Mistake Avoidance

Better Stack · watch the original · 0:45

Check yourself

Four questions on this section. Wrong answers are the point: each one explains itself.

Now you explain it

Close what you watched and explain the topic in your own words in 30 seconds. What you can explain is what you have learned. You are marked against this course's lessons and nothing beyond them.

Explain how you would do this: Doing it properly — Join Mistake Avoidance.

You are judged on these, and nothing else in the course:

  • Write Inner Join
  • Write Left Join
  • Join Mistake Avoidance

Going deeper

1 lessons · short section, not a full path on its own

1. SQL Joins Explained | INNER, LEFT, RIGHT, FULL JOIN with Examples

Advanced Join Types

ByteByUD · watch the original · 1:23

Check yourself

Four questions on this section. Wrong answers are the point: each one explains itself.

Now you explain it

Close what you watched and explain the topic in your own words in 30 seconds. What you can explain is what you have learned. You are marked against this course's lessons and nothing beyond them.

Explain how you would do this: Going deeper — Advanced Join Types.

You are judged on these, and nothing else in the course:

  • Advanced Join Types
SQL JOIN · Explique