updating duplicate entries by one for each duplicate

Question

0.00/5 (No votes)

See more:

HI I have a problem with one of my tables.
I originally update it using curtain criteria from another table.

these records then created duplicate entries due to these criteria. I cant link it back up and change the criteria, so I need and alternative to this.

basically when i select the records, they return ass follows :

ID  | Name | Amount | 
1     Jake    2100
1     Kim     450
1     Jake    2100
1     Henry   410

so i want to run one script that will update the id of any duplicate records to return the following :

ID  |  Name | Amount
1     Jake    2100
2     Kim     450
3     Jake    2100
4     Henry   410

any advice?

take into consideration that ill have to first select the "1's" and then update accordingly

Posted 7-Jul-13 21:13pm

Member 9374423

Updated 7-Jul-13 21:24pm

Aarti Meswania

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Adarsh chauhan · Accepted Answer · 2013-07-07T21:30:00

Solution 2

Hi,

Try this

ALTER TABLE TableName
ADD ID2 INT IDENTITY
   
update TableName set Id=id2  
 
ALTER TABLE TableName 
DROP COLUMN ID2

it hope this will help you

Posted 7-Jul-13 21:30pm

Adarsh chauhan

Comments

Member 9374423 8-Jul-13 4:07am

hmm... this will only set the new column to the same values instead of incrimenting the id's

Adarsh chauhan 8-Jul-13 4:26am

I found this the shortest and easiest way to accomplish your motive..
Although there may be some other ways too but that's how I would be doing this..

Member 9374423 8-Jul-13 4:58am

the script will definitely consist of an update with a counter

Adarsh chauhan 8-Jul-13 5:23am

If you got any other way then please share, it will help me if someday I have to perform same task in different way...

Member 9374423 8-Jul-13 5:31am

i will as soon as i find the answer.

Adarsh chauhan 8-Jul-13 5:45am

thanks.. :)