摘要： 1、查找表中多余的重复记录，重复记录是根据单个字段（peopleId）来判断 select * from people where 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 people where 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） selec 阅读全文