Join multiple columns from one table to single column from another table

Question

I\'m trying to learn how to join multiple columns from one table to a single column from another table.

This is my table structure in its simplest form:

Answer 1

SELECT t1.team_name AS team1, t2.team_name AS t2, tr.team_1, tr.team_2
FROM trades tr
INNER JOIN teams t1 ON t1.id = tr.team_1
INNER JOIN teams t2 ON t2.id = tr.team_2