SQL重复记录查询的几种方法

select * from TB_MAT_BasicData1 2 where MATNR in ( select MATNR from TB_MAT_BasicData1 group by MATNR having count(MATNR)>1)

2.表需要删除重复的记录（重复记录保留1条），

select distinct * into #Tmp from TB_MAT_BasicData1
drop table TB_MAT_BasicData1
select * into TB_MAT_BasicData1 from #Tmp
drop table #Tmp

 

SQL重复记录查询的几种方法

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