Solved

How to insert row with explicit primary key

Posted on 2010-11-29
7
702 Views
Last Modified: 2012-05-10
I have a small sql ce database and I want to restore some rows from an sql script. Everything works fine, except the newly added rows are given new primary keys, even though I explicitly state them in the insert statement. I can export a row with ID = 8 but when I insert it again, I get's a new ID, how can I insert a new row and force the database to give that row a specific ID ??? Otherwise I can't restore the database and give the imported rows the correct IDs.
0
Comment
Question by:ShaunDumas
7 Comments
 
LVL 16

Accepted Solution

by:
BurnieP earned 500 total points
ID: 34234782
You need to set identity_insert on first :

SET IDENTITY_INSERT TableName ON

INSERT INTO TableName (ID) VALUES (8)
0
 
LVL 22

Expert Comment

by:8080_Diver
ID: 34235008
You should be aware that you can cause some serious issues if you insert duplicate primary keys.
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 34236062
>>if you insert duplicate primary keys. <<
I suspect you meant duplicate identity values.
0
6 Surprising Benefits of Threat Intelligence

All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

 
LVL 2

Expert Comment

by:Fahad Pathan
ID: 34236955
if u r trying to insert duplicate values in primary key column then it is not possible, but you can insert duplicate values in identity column.
0
 
LVL 22

Expert Comment

by:8080_Diver
ID: 34239264
@acperkins/@pathan_fahad,

reference the following quote from the author's original post:
except the newly added rows are given new primary keys, even though I explicitly state them in the insert

Even if the column is "just" an identity column and is not a PK, having a duplicate value in an "identity column" is going to mean that there will be a potential confusion with any use, whatsoever, of that identity column for purposes of identifying a given row.  (Sort of turns the concept of an "Identity column" into an oxymoron, don't you think?)

@ShaunDumas,
You can force the database to allow you to insert the value into the Identity column by the statements supplied in BurnieP's respons (#34234782); however, I would make sure that there are no rows with the same Identity value before inserting the rows.  This can be done by using something like the attached SQL.
INSERT INTO yourtable

(

 specify the columns

)

SELECT again specify the columns

FROM yourbackuptable B

LEFT OUTER JOIN yourtable Y

ON Y.identitycolumn = B.identitycolumn

WHERE Y.identitycolumn IS NULL;

Open in new window

0
 

Author Closing Comment

by:ShaunDumas
ID: 34242705
Nice!
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 34244740
>>Sort of turns the concept of an "Identity column" into an oxymoron, don't you think<<
No doubt.  But you have to admit that the following is a tad impossible: "insert duplicate primary keys."
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

If you find yourself in this situation “I have used SELECT DISTINCT but I’m getting duplicates” then I'm sorry to say you are using the wrong SQL technique as it only does one thing which is: produces whole rows that are unique. If the results you a…
Slowly Changing Dimension Transformation component in data task flow is very useful for us to manage and control how data changes in SSIS.
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.

708 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now