考虑下面的代码:django查询select_related是否需要后续查询?
progresses = Progress.objects.filter(customer=request.user).select_related()
if id is not None
progress = progresses.get(pk=id)
else:
progress = progresses[0]
我是否需要添加select_related()为progress = progresses.filter(pk=id).select_related()
这样第二个查询?