Hvordan vil jeg rette en select-sætning til at forespørge i denne database?

Prøv at forbinde klienten og testtabel som:

SELECT c.forename, COUNT(c.forname)
FROM Client c INNER JOIN Test t
ON c.clientNo = t.clientNo
WHERE c.forename = 'Jim'
AND   t.status = 'PASS'
GROUP BY c.forname