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 。
查询sql语句通过条件去除重复的数据 select t.*from 表 t，(select 字段1，MAX(字段2)字段2 from 表 group by 字段1)awhere t.字段1=a.字段1 and t.字段2=a.字段2
Excel怎样查找删除重复数据，由于重复输入或粘贴等原因，Excel2007工作表往往存在重复的数据或记录。如果工作表的规模比较大，手工查找和删除重复数据很难做到“完全彻底”。
