Question

I have 2 tables :

users : contains id and name
friends : contains id1 and id2

Let’s suppose I have this data in the users table :

id : 1 , name : FinalDestiny
id : 2 , name : George

And this data in the friends table:

id1: 1 , id2: 2

So this means that 1 is friend with 2.

I need with one single query to say that id1 is friend with id2( but I need the names) Like: FinalDestiny is friend with George. I have to make one mysql inner or left join but I don’t know how

Answer 1

use aliases and double-join the user table with the friends table:

    SELECT `u1`.`name` `name1`, `u2`.`name` `name2`
      FROM `friends` `f`
INNER JOIN `users` `u1`
        ON `f`.`id1` = `u1`.`id`
INNER JOIN `users` `u2`
        ON `f`.`id2` = `u2`.`id`