mysql----[Err] 1055 - Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggr...
问题:[SQL]SELECTpi.paper_interviewee_id,pi.batch,pi.total_time,pi.use_time,pq.question_score,sum(pq.question_score),q.classification_id,qc.classification_namefromt_paper_intervieweepi,t_paper_questionpq