Question

I have a table that has two columns that each contain a member id that is a foreign key to a members table that contains their name. I want to select the first table with names instead of member IDs. I’m not sure of a way to do this. I feel like there’s certainly a way involving an INNER JOIN, but I can’t think of how to pick two names from one table in one INNER JOIN. Any ideas?

Thanks in advance!

Match table

|------|-------|
| user | match |
|------|-------|
| 1    | 4     |
| 2    | 1     |
| 3    | 2     |
|------|-------|

Members table

|------|-------|
| user | name  |
|------|-------|
| 1    | Joe   |
| 2    | Kyle  |
| 3    | John  |
| 4    | Nate  |
|------|-------|

Desired output

|------|-------|
| user | match |
|------|-------|
| Joe  | Nate  |
| Kyle | Joe   |
| John | Kyle  |
|------|-------|

Answer 1

You should join members table for twice.

SELECT M1.NAME , M2.NAME
FROM MEMBERS M1
INNER JOIN MATCH M
   ON M1.USER = M.USER
INNER JOIN MEMBERS M2
   ON M2.USER = M.MATCH

Be carefull with lower and upper identifiers if your database is mysql.