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Delete Duplicate record from SQL Server2000

Hi friends,

create table duplicate
intId int, varName varchar(50)
insert into duplicate(intId,varName) values(1,'rajesh')
insert into duplicate(intId,varName) values(2,'raj12')
insert into duplicate(intId,varName) values(1,'rajesh')
insert into duplicate(intId,varName) values(2,'raj12')
insert into duplicate(intId,varName) values(3,'raj12')

---Create Duplicate table
create table #dupTbl
intId int, varName varchar(50)
insert into #dupTbl
select intId,varName from duplicate group by intId,varName having count(*) > 1


delete from duplicate where intId in (select intId from #dupTbl)


insert into duplicate
select intId,varName from #dupTbl

You can checked your table...
Oct 4 '07 #1
3 10894
469 256MB
Additionally look at this post... i believe its a simpler way and works well for me!

Oct 10 '07 #2

The above link has a good way to accoplish the task but here is another possibility but would work if there is some id column;

Delete all duplicate records ..
select distinct will bring all the uniquie records and rest would the duplicate and will be deleted.

Expand|Select|Wrap|Line Numbers
  1. Delete * from YourTable where ID <> IN ( SELECT Distinct IDColumn from YourTable)
Oct 21 '07 #3
Following website demonstrates easiest way to delete duplicate records from SQL Server (any version).


Dec 25 '07 #4

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