We help IT Professionals succeed at work.

SQL 2005 Primary Key Error

177 Views
Last Modified: 2010-05-18
I have a table, t_Month, that I needed to refresh with data from our development box.  The primary key on this table is Month_ID so I removed the key, re-imported the data, and then tried to add the key back on.  When I try to save the table I get the following error:

't_Month' table
- Unable to create index 'PK_t_Month'.  
CREATE UNIQUE INDEX terminated because a duplicate key was found for object name 'dbo.t_Month' and index name 'PK_t_Month'.  The duplicate key value is (1).
Could not create constraint. See previous errors.
The statement has been terminated.

I can't find another index called PK_t_Month anywhere.  Not really sure what to do here, even went so far as to bounce the server on the chance that the key was stuck in memory somewhere.  

Thanks in advance,

N
Comment
Watch Question

Commented:
The pk_t_month index is in the dbo.t_month table.
Commented:
Unlock this solution and get a sample of our free trial.
(No credit card required)
UNLOCK SOLUTION
AneeshDatabase Consultant
CERTIFIED EXPERT
Top Expert 2009

Commented:
> can't find another index called PK_t_Month anywhere
It is not the problem with the existance of another index, it is the problem with the data, your column contain some duplicate values, that is why it is failing, you can create it by skinpping the existing data (there is an option )

Author

Commented:
Crag,

Good call, for whatever reason it never occurred to me to check the actual data.  I must not have it "delete existing values" on the import.

Thanks for the suggestion,

N

Commented:
As aneeshattingal and crag point out, look at your data. You have duplicate values in the primary key. That is not allowed.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Thanks for using Experts Exchange.

Please provide your email to receive a sample view!

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.