Remove Duplicate Records

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I have one Tabele with four columns
calldate datetime ,number1 varchar(50),varchar(50),duration int in this table i have some data like;

calldate number1 number2 duration
2012-06-19 10:22:45.000 165 218 155
2012-06-19 10:22:45.000 165 218 155
2012-06-19 10:22:45.000 165 218 155
2012-06-19 10:27:31.997 919037311144 237 26
2012-06-19 10:27:31.997 919037311144 237 26
2012-06-19 10:27:31.997 919037311144 237 26

Nearly there are 1500 record in that above date (2012-06-19) , duplicate records are nearly 250.

I want to delete that duplicate records for that particular date 2012-06-19.

Please help me.
Thanks.

Posted 19-Jun-12 12:05pm

srinvas

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Tim Corey · Accepted Answer · 2012-06-19T12:11:00

Solution 1

I would recommend the tip from the following post:

http://www.4guysfromrolla.com/webtech/sqlguru/q051200-2.shtml[^]

Posted 19-Jun-12 12:11pm

Tim Corey

Comments

srinvas 19-Jun-12 18:46pm

Hi tim,
i am getting duplicate records, but how can i delete that records.

Tim Corey 19-Jun-12 19:30pm

You need to delete each row that is the same as the row before it. That way you will delete all of the duplicate rows while saving one row for each unique item.