Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Cannot create a relationship between two specific tables in a database as error message occurs

Posted on 2008-06-12
2
Medium Priority
?
208 Views
Last Modified: 2011-10-19
Cannot create a relationship between two specific tables in a database as error message occurs.

I need to create a cascading relationship between two tables, users and addressDetails.

However, an error occurs (file is attached) and wont let me create the relationship, even if i remove the cascading delete.
Any clues?
All other tables with similar links do work.

Thanks Julia
MembershipSchema.txt
0
Comment
Question by:Juliafrazer
2 Comments
 
LVL 60

Assisted Solution

by:chapmandew
chapmandew earned 400 total points
ID: 21768581
The only way you're going to be able to create your unique constraint is for you to remove the duplicates from the table for the column you're trying to create the constraint on.
0
 
LVL 1

Accepted Solution

by:
Bernard_Jakopovic earned 1600 total points
ID: 21768670
combination of PK columns in addressDetails produces duplicate key. try to build PK on addressDetails separately, finding out what rows are producing this error. You can do that with query like:

select PKcolumn1, PKcolumn2.. from addressDetails group by  PKcolumn1, PKcolumn2 having count(*)>1

this will list all duplicate keys.
(PKcolumn1, PKcolumn2.. are all columns you use for PK in addressDetails table)
you will probably have to extend PK to more columns, or remove duplicate data.

This, however, doesnt affect building the relationship exept if Users is FK table (you are puting relation on addressDetails in users table) and this is a wrong approach in modeling. You must put FK to users in addressDetails. So, you evidently have two problems to solve :)
0

Featured Post

Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Recently, when I was asked to create a new SQL 2005 cluster, Microsoft released a new service pack for MS SQL 2005 what is Service Pack 3. When I finished the installation of MS SQL 2005 I found myself troubled why the installation of SP3 failed …
In this article I will describe the Copy Database Wizard method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
Are you ready to place your question in front of subject-matter experts for more timely responses? With the release of Priority Question, Premium Members, Team Accounts and Qualified Experts can now identify the emergent level of their issue, signal…
Screencast - Getting to Know the Pipeline

885 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question