sql中怎么删除两条重复记录并保留一条 将数据去重复后暂存到临时表#a中select?distinct*into#a?from?table1?where?条件?delete?table1?where?删除限制条件insert?into?table1?select*from#a-将暂存。
SQL查询,如何去除重复的记录? sql查询去2113除重复值语句sql 单表/多表查询去除重5261复记录单表distinct多表group bygroup by 必须放在 order by 和 limit之前,不然会4102报错1、查找表中多余的重复记录,1653重复记录是根据单个字段(peopleId)来判断select*from peoplewhere peopleId in(select peopleId from people group by peopleId having count(peopleId)>;1)2、删除表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断,只留有rowid最小的记录delete from peoplewhere peopleId in(select peopleId from people group by peopleId having count(peopleId)>;1)and rowid not in(select min(rowid)from people group by peopleId having count(peopleId)>;1)3、查找表中多余的重复记录(多个字段)select*from vitae awhere(a.peopleId,a.seq)in(select peopleId,seq from vitae group by peopleId,seq having count(*)>;1)4、删除表中多余的重复记录(多个字段),只留有rowid最小的记录delete from vitae awhere(a.peopleId,a.seq)in(select peopleId,seq from vitae group by peopleId,seq having count(*)>;1)and rowid not in(select min(rowid)from 。
excel中如何删除重复的行 excel删除重复行数据,我们在编辑excel的内容的时候,往往会出现一些重复的数据行,这会影响我们的数据分析,下面介绍下如何删除这些重复的数据行