SQL Server 2000, SQL Server 7.0, SQL Server 6.5 and earlier
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How to Delete Duplicate Rows in a Given Table
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--**************************************
-- Name: Delete Duplicate Rows
-- Description:How to Delete Duplicate Rows in a Given Table
-- By: Himanshu Upadhyay
--
--This code is copyrighted and has-- limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=832&lngWId=5--for details.--**************************************
Select Distinct * Into #Temp From TABLENAME
go
Truncate TABLENAME
go
Insert Into TABLENAME Select * From #Temp
1. Syntax is TRUNCATE TABLE TABLENAME. 2. I would wrap this in a transaction. 3. Make sure the DBA knows you're using TRUNCATE so they can change their backup procedures if necessary. (If this comment was disrespectful, please report it.)
4/26/2004 5:00:05 PM:
Thanks, this code really helped me. I will never use this because the tables I need to use it on contains millions of records but you I was able to modify this to the following code to do just a small fragment of the database.
Select distinct * into #Temp From TABLENAME where SKU = '1990ALEVI' delete from TableName where SKU = '1990ALEVI' insert into TableName select * from #Temp
I was previously using this horribly encrypt routine that took about two hours to re-configure when I wanted to run it over another table with different information.
You defiantly saved a lot of time for me.
Thanks again
(If this comment was disrespectful, please report it.)
You should avoid the use of the * whenever possible. This could be a brute of a query and don't need to tax the server anymore than you already potentially could. (If this comment was disrespectful, please report it.)
(If this comment was disrespectful, please report it.)
10/16/2012 12:42:05 PM:
transaction code
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4/26/2004 12:58:44 PM: 
