# Exercise: Joins

Exercise: Joins: Exercise: Joins.

Updated: November 3, 2026

1. [Exercise: Joins](https://www.ask-codey.com/lessons/exercise-joins) (Journeyman): Twelve questions about Northwind that each need more than one table, answered with inner and outer joins, a self join, sub-queries and CASE, each with the result to expect.

Source: https://www.ask-codey.com/courses/csharp-full-stack-bootcamp/topics/exercise-joins