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select *   from xi a where (a.username) in (select username   from xi group by username   having count(*) > 1)

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select count(username)   as '重复次数',username from xi   group by username having count(*)>1 order by username   desc

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select *   from people

where peopleId   in (select peopleId from people   group by peopleId having count(peopleId) > 1)

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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)

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select *   from vitae a

where (a.peopleId,a.seq)   in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)

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delete from vitae a

where (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 vitae group by peopleId,seq   having count(*)>1)

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select *   from vitae a

where (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 vitae group by peopleId,seq   having count(*)>1)

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Select Name,Count(*)   From A Group By Name Having Count(*) > 1

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Select Name,sex,Count(*)   From A Group By Name,sex   Having Count(*) > 1

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declare @max integer,@id integer

declare cur_rows   cursor local for

select 主字段,count(*) from 表名 group by 主字段 having count(*) >;

open cur_rows   fetch cur_rows into @id,@maxwhile @@fetch_status=0

begin

 select @max = @max -1

 set rowcount   @max

 delete from 表名 where 主字段 = @id

fetch cur_rows   into @id,@maxend

close cur_rows

set rowcount   0

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select distinct * from tableName

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select distinct * into #Tmp from tableName

drop table tableName

select *   into tableName from #Tmp

drop table #Tmp

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select identity(int,1,1)   as autoID, * into #Tmp from tableName

select min(autoID)   as autoID into #Tmp2 from #Tmp   group by Name,autoID

select *   from #Tmp where autoID in(select autoID from #tmp2)　

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select *   from tablename where id in (select id from tablenamegroup by idhaving count(id) > 1)

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SELECT *   FROM tb_table WHERE sample_code IN( SELECT sample_code FROM tb_table GROUP BY sample_code HAVING COUNT(sample_code) > 1 );

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SELECT *   from (SELECT *, CONCAT(name,code) as nameAndCode from tb_table) t WHERE t.nameAndCode in

(

 SELECT nameAndCode   from (SELECT CONCAT(name,code) as nameAndCode from tb_table) tt GROUP BY nameAndCode   HAVING count(nameAndCode) > 1

)