Question

In Ms Access, I’m trying to write a SQL query that answers a question like:
Return all player IDs on all teams in a list of football players where at least one member of the team is injured.

I’m new to SQL. I’ve tried something like

SELECT pid FROM players WHERE team_id IN 
           (SELECT team_id FROM players WHERE injury = 'yes') 

Access won’t accept this IN. Is there a simple way to do this? I’d rather run thus as one query, instead of creating separate queries, so I can change it easily as necessary.

Answer 1

I find it hard to believe that it doesn’t support IN, nevertheless you can do it using a join:

SELECT distinct players.pid
FROM players as injured
INNER JOIN players on players.team_id = injured.team_id
WHERE injured.injury = 'yes'

I used distinct in case there’s multiple injured players on the one team, which would result in the players from that team being returned multiple times