Comments on: SQL SERVER – 2000 – SQL SERVER – Delete Duplicate Records – Rows – Readers Contribution

By: SQL SERVER – Weekly Series – Memory Lane – #027 | SQL Server Journey with SQL Authority

Sat, 04 May 2013 01:31:16 +0000

[...] Delete Duplicate Records – Rows – Readers Contribution A quick script from reader very important article but very less explored by users. Let me know your thoughts about this one. [...]

By: SQL SERVER – Select and Delete Duplicate Records – SQL in Sixty Seconds #036 – Video « SQL Server Journey with SQL Authority

Wed, 19 Dec 2012 01:30:35 +0000

[...] Delete Duplicate Records – Rows – Readers Contribution [...]

By: Krzysiek

Krzysiek — Tue, 23 Oct 2012 11:32:03 +0000

Hi,
Creating table copy with unique clustered index on ID column, and coping
original table rows to table copy sounds reasonable , specially for large tables. It works fast !!! using SQL Server in-built unique clustred key constraint with eliminate duplicates with IGNORE_DUP_KEY option enabled.

For instance:

CREATE TABLE Data_backup….. (the same structure as original table Data with duplicates)

(SQL Server 2000)
CREATE UNIQUE CLUSTERED INDEX PK_Data_backup
ON Data_backup(ID)
WITH IGNORE_DUP_KEY, FILLFACTOR = 90
GO

SET IDENTITY_INSERT Data_backup ON
INSERT INTO Dane_backup(ID,data1,data2)
SELECT * from Data
SET IDENTITY_INSERT Data_backup OFF

Finally you will get table Data_backup with duplicates removed automatically by unique clustered key contraint mechanism.

Krzsiek. IT WORKS FAST FOR LARGE TABLES.

By: Feodor

Feodor — Tue, 19 Jan 2010 18:56:05 +0000

Ah, great post. And I am sooo happy that the SQL 2005-2008 introduced the CTEs and the ranking functions! :) By using both you can easily remove duplicate rows.

By: Karthik

Karthik — Fri, 05 Jun 2009 04:59:57 +0000

This is your answer
CREATE PROC usp_NestLevelValues AS
SELECT @@NESTLEVEL AS ‘Current Nest Level’;
EXEC sp_executesql N’SELECT @@NESTLEVEL as TwoGreater’ ;
GO
EXEC usp_NestLevelValues;
GO

By: kg

kg — Mon, 30 Jun 2008 19:59:37 +0000

i need an answer to following question if can someone help me out with this

How would you complete the following string, in order to obtain a value equal to
2 + the current nesting level?
CREATE PROC usp_NestLevelValues AS
SELECT @@NESTLEVEL AS ‘Current Nest Level’;
EXEC __________ N’SELECT @@NESTLEVEL as TwoGreater’ ;
GO
EXEC usp_NestLevelValues;
GO

By: kuldeep

kuldeep — Tue, 24 Jun 2008 12:44:38 +0000

HI pinaldave ,
i have one query how to delete image duplicate row in my table. my table has no primary key or identity column .. if u have any solution then please help me …

thanks
kuldeep.