Comments on: How to delete duplicate rows with SQL http://www.xaprb.com/blog/2006/10/11/how-to-delete-duplicate-rows-with-sql/ Stay curious! Thu, 09 Feb 2012 09:56:43 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: veeramanink http://www.xaprb.com/blog/2006/10/11/how-to-delete-duplicate-rows-with-sql/#comment-18654 veeramanink Wed, 15 Sep 2010 06:18:55 +0000 http://www.xaprb.com/blog/?p=241#comment-18654 try this also --insert into staff_mas values(4,'bala') select * from staff_mas //* Before Delete Duplicate records ------------------- |s_code | S_name | ------------------- | 1 | varathu | | 1 | varathu | | 2 | veera | | 2 | veera | | 2 | veera | | 3 | suresh | | 3 | suresh | | 4 | bala | | 4 | bala | | 4 | bala | ------------------- *// --Delete Query Run Row by Row So we can set rowcount 1 set rowcount 1 delete staff_mas from staff_mas s1 where (select count(S_code) from staff_mas s2 where s2.s_code=s1.s_code)>1 while @@rowcount > 0 delete staff_mas from staff_mas s1 where (select count(s_code) from staff_mas s2 where s2.s_code=s1.s_code)>1 --Now this time we can reset the rowcount value is 0 then only we get full result of the Query set rowcount 0 select * from staff_mas //* After Delete Duplicate records ------------------- | s_code| S_name | ------------------- | 1 | varathu | | 2 | veera | | 3 | suresh | | 4 | bala | ------------------- *// try this also
–insert into staff_mas values(4,’bala’)

select * from staff_mas
//* Before Delete Duplicate records
——————-
|s_code | S_name |
——————-
| 1 | varathu |
| 1 | varathu |
| 2 | veera |
| 2 | veera |
| 2 | veera |
| 3 | suresh |
| 3 | suresh |
| 4 | bala |
| 4 | bala |
| 4 | bala |
——————-
*//
–Delete Query Run Row by Row So we can set rowcount 1
set rowcount 1
delete staff_mas from staff_mas s1 where (select count(S_code) from staff_mas s2 where s2.s_code=s1.s_code)>1

while @@rowcount > 0
delete staff_mas from staff_mas s1 where (select count(s_code) from staff_mas s2 where s2.s_code=s1.s_code)>1

–Now this time we can reset the rowcount value is 0 then only we get full result of the Query
set rowcount 0

select * from staff_mas
//* After Delete Duplicate records
——————-
| s_code| S_name |
——————-
| 1 | varathu |
| 2 | veera |
| 3 | suresh |
| 4 | bala |
——————-
*//

]]> By: Chris http://www.xaprb.com/blog/2006/10/11/how-to-delete-duplicate-rows-with-sql/#comment-18347 Chris Fri, 21 May 2010 11:12:03 +0000 http://www.xaprb.com/blog/?p=241#comment-18347 Perfect - technique 3 worked for me! Thanks for the post! Perfect – technique 3 worked for me! Thanks for the post!

]]> By: jonez1 http://www.xaprb.com/blog/2006/10/11/how-to-delete-duplicate-rows-with-sql/#comment-18155 jonez1 Sun, 18 Apr 2010 19:26:36 +0000 http://www.xaprb.com/blog/?p=241#comment-18155 Hi. I'm adding my "thanks" to the "thank_you row". Hi. I’m adding my “thanks” to the “thank_you row”.

]]> By: timor http://www.xaprb.com/blog/2006/10/11/how-to-delete-duplicate-rows-with-sql/#comment-18026 timor Mon, 15 Mar 2010 13:32:16 +0000 http://www.xaprb.com/blog/?p=241#comment-18026 Thank you so much as you have save my life, i was searching....searching...searching to find how to remove duplicate. you way the best. keep up the good work Thank you so much as you have save my life, i was searching….searching…searching to find how to remove duplicate. you way the best. keep up the good work

]]> By: Roy Bellingan http://www.xaprb.com/blog/2006/10/11/how-to-delete-duplicate-rows-with-sql/#comment-17477 Roy Bellingan Thu, 24 Dec 2009 20:51:32 +0000 http://www.xaprb.com/blog/?p=241#comment-17477 This article is very impressive, superb! This article is very impressive, superb!

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