want to remove the duplicate records

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want to remove the duplicate records

Author

Topic

divyaram
Posting Yak Master

180 Posts

Posted - 2012-08-06 : 10:36:09

I am having data as mentioned below
101 Nokia
102 Nokia_old
103 Nokia_old
104 Nokia_old
105 Nokia_old
201 Samsung
202 Samsung_Old
203 Samsung_Old
204 Samsung_Old
205 Samsung_Old
301 HTC
302 HTC_Old
303 HTC_Old
304 HTC_Old
305 HTC_Old
306 HTC_Old
307 HTC_Old

In this case i have return result set like this in sql server

101 Nokia
102 Nokia_old
201 Samsung
202 Samsung_Old
301 HTC
302 HTC_Old

Regards,
Divya

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-08-06 : 10:37:36

[code]
SELECT ID,NameField
FROM
(
SELECT ROW_NUMBER() OVER (PARTITION BY NameField ORDER BY ID) AS Seq,*
FROM table
)t
WHERE Seq=1
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-08-06 : 10:40:47

other (sql 2000 supported) methods


SELECT t.ID,t.NameField
FROM table t
INNER JOIN (SELECT Namefield,MIN(ID) AS MinID
            FROM table
            GROUP BY Namefield
           )t1
ON t1.NameField = t.NameField
AND t1.MinID = t.ID


SELECT t.ID,t.NameField
FROM table t
WHERE EXISTS (SELECT 1
              FROM table
              WHERE NameField=t.NameField
              GROUP BY NameField
              HAVING MIN(ID) = t.ID)

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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