如何过滤sql导致的有-多通关系
student
, club
student_club
:
student { id name}club { id name}student_club { student_id club_id}
SELECT student.*FROM studentINNER JOIN student_club sc ON student.id = sc.student_idLEFT JOIN club c ON c.id = sc.club_idWHERE c.id = 30 AND c.id = 50
慕侠2389804
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