帐号治理-帐号管理--更新

backend/app/crud/member.py

@@ -62,3 +62,8 @@ async def remove_member(db: AsyncSession, member: StudyMember) -> StudyMember:
     await db.commit()
     await db.refresh(member)
     return member
+
+
+async def user_has_memberships(db: AsyncSession, user_id: uuid.UUID) -> bool:
+    result = await db.execute(select(StudyMember.id).where(StudyMember.user_id == user_id))
+    return result.first() is not None