text: ## 查询新知识点为空的homework_id
  #macro($findKpIsNullList())
  	SELECT id FROM homework WHERE knowledge_points IS NULL or knowledge_points = ''
  #end
  
  ##通过作业id查询对应的题目新知识点 
  #macro($findNewKps(homeworkId))
  	SELECT DISTINCT b.knowledge_code FROM homework_question a
  	INNER JOIN question_knowledge b ON a.question_id = b.question_id
   	WHERE homework_id = :homeworkId
  #end
  
  ##查询新知识点里存的旧知识点的数据 
  #macro($findKpIsWrongList())
  	SELECT id FROM homework WHERE knowledge_points IS NOT NULL AND knowledge_points!=''
  AND knowledge_points NOT IN (SELECT CODE FROM knowledge_point)
  #end
  