query table using another lookup table sql

Wondarar :

I'm looking for all names and URLs of artists that a user with user_id 57 has stored.

Table "artists"

    id | name         | url
    ---+--------------+--------
    01 | Luke Combs   | url-1
    02 | Jason Aledan | url-2
    03 | Upchurch     | url-3
    04 | Lee Brice    | url-4
    05 | Khalid       | url-5

Lookup table user_artists:

    user_id | artist_id
   ---------+-----------
         02 | 05
         15 | 01
         37 | 01
         57 | 03
         57 | 01
         28 | 02

Desired outcome for user_id=57:

    name        | url
    ------------+--------
    Luke Combs  | url-1
    Upchurch    | url-3

My attempt:

SELECT name, url, user_id 
FROM artists, user_artists 
INNER JOIN user_artists.user_id ON artists.name 
WHERE user_id = 57; 

The SQL queries seem so confusing to me. I'm not even sure if inner join is the right one. I spent the whole afternoon googling these queries and finally came with this via a SQL generator. Any help, thanks much!

marc_s :

You didn't mention what concrete RDBMS this is for - and the various RDBMS are not 100% compatible in how they "interpret" the SQL standards - but I guess something like this should work in just about any RDBMS:

SELECT name, url, user_id 
FROM artists a
INNER JOIN user_artists ua ON ua.artist_id = a.id
WHERE ua.user_id = 57; 

Basically, you take those rows from user_artists where the user_id matches your desired value, and then you join the artists table via the "link" between user_artists.artist_id to the artist.id column - and that produces your desired output.