用SQL語(yǔ)句怎么過(guò)濾重復(fù)數(shù)據(jù)？1、查找表中多余的重復(fù)記錄，重復(fù)記錄是根據(jù)單個(gè)字段（peopleId）來(lái)判斷復(fù)制代碼代碼如下:select * from peoplewhere peopleId in

用SQL語(yǔ)句怎么過(guò)濾重復(fù)數(shù)據(jù)？

1、查找表中多余的重復(fù)記錄，重復(fù)記錄是根據(jù)單個(gè)字段（peopleId）來(lái)判斷復(fù)制代碼代碼如下:select * from peoplewhere peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)2、刪除表中多余的重復(fù)記錄，重復(fù)記錄是根據(jù)單個(gè)字段（peopleId）來(lái)判斷，只留有rowid最小的記錄復(fù)制代碼代碼如下: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)