2010-11-30 5 views

답변

8

당신이 사용하고있는? 예 :

SELECT y.NAME, y.EMAIL, k.DATE, k.WORK_NR, k.SCORE, k.FILENAME 
FROM bas1.students y JOIN bas1.assignments k ON y.ID = k.student_id 
JOIN bas1.topics a ON k.topic_id = a.id 
WHERE a.NAME = 'History'; 
0

에 두 번

SELECT y.NAME, y.EMAIL, k.DATE, k.WORK_NR, k.SCORE, k.FILENAME 
FROM bas1.students y, bas1.assignments k, bas1.topics a 
WHERE y.ID = k.student_id AND k.topic_id = a.id 
AND a.NAME = 'History'; 

변화가 있습니까 WHERE