Question

I have the following setup in MySQL:

• Table Game: gameid, p1state, p2state
• Table PlayerGamestate: playergamestateid, ready

p1state and p2state are foreign keys into PlayerGamestate. I want to return all Games which have BOTH p1state and p2state marked as ready=1. Is this possible in a single query?

I am using php to access if that matters but I would prefer to do it in one query.

Answer 1

Yes:

SELECT GameID
FROM Game G
INNER JOIN PlayerGameState GS1 on G.P1state = GS1.PlayerGamestateID
INNER JOIN PlayerGameState GS2 On G.P2State = GS2.PlayerGameStateID
WHERE GS1.ready=1 and GS2.ready=1