题解 | #插入记录(三)#
插入记录(三)
http://www.nowcoder.com/practice/978bcee6530a430fb0be716423d84082
关键词:无论是否存在(先做删除步骤在进行插入)
delete from examination_info where exam_id=9003; insert into examination_info (exam_id,tag,difficulty,duration,release_time) values(9003,'SQL','hard',90,'2021-01-01 00:00:00');