Comments on: SQL Puzzle: SQL Advance Query – Delete duplicate without using RANK, PARTITION, ROW NUMBER

By: vamshi vutla

vamshi vutla — Thu, 24 Jan 2019 02:32:32 +0000

select max(id), col1
FROM tbl_TempData a
WHERE col1 in
(SELECT col1 FROM tbl_TempData b group by col1 HAVING count(col1)>1 )
GROUP BY col1
UNION
select DISTINCT id, col1
FROM tbl_TempData
WHERE col1 in
(SELECT col1 FROM tbl_TempData b group by col1 HAVING count(col1)=1);

By: Anvesh Patel

Anvesh Patel — Wed, 28 Feb 2018 19:49:36 +0000

In reply to Yasir. Yes, it is possible.

By: Yasir

Yasir — Wed, 28 Feb 2018 06:20:46 +0000

is it possible with any rank function?

By: Anvesh Patel

Anvesh Patel — Fri, 26 Jan 2018 07:24:01 +0000

In reply to aprkturk. https://www.mssqltips.com/sqlservertip/1958/sql-server-cross-apply-and-outer-apply/

By: aprkturk

aprkturk — Fri, 26 Jan 2018 06:38:05 +0000

Yes I know, of course that is an option. I asked for how it works..

By: Anvesh Patel

Anvesh Patel — Tue, 23 Jan 2018 18:59:10 +0000

In reply to aprkturk. cross apply is one option, you can try your options as well...

By: aprkturk

aprkturk — Tue, 23 Jan 2018 05:56:08 +0000

Why did you use cross apply? Please explain..

By: Dinesh I.S

Dinesh I.S — Sat, 25 Nov 2017 04:48:35 +0000

Delete From tbl_TempData
Where Col1 In(Select Col1 From TBL_TEMPData Group By Col1 Having Count(*)>1)
And ID Not In(Select Max(ID) From TBL_TEMPData Group By Col1 Having Count(*)1)