例子:表名 Paper 。通过字段PaperID查找重复数据。
1 --查询某表中重复的数据
select * from Paper group by PaperID having count(*)>1;
2--删除重复行数,只剩不重复的记录(rowid为sqlite自带字段)
delete from Paper where Paper.rowid not in (select MAX(Paper.rowid) from Paper group by PaperID);
sqlite 删除表中重复数据(亲测可用),布布扣,bubuko.com
原文地址:http://www.cnblogs.com/wangyuehome/p/3794020.html