INSERT INTO student(id,xuesheng,yuwen,shuxue,yingyu) SELECT id,xuesheng,yuwen,shuxue,yingyu FROM stu;
实践:
insert into store_advertisings(id,title,PicListJson,edittime)
(select s.Id,s.`Name` as name , ‘[]‘,NOW() from stores s left join store_advertisings d on s.Id= d.Id where d.Id is null)