Can I prevent a computed column from changing it's value if the formula changes?

Posted by William Hurst on Stack Overflow See other posts from Stack Overflow or by William Hurst
Published on 2011-11-21T16:04:11Z Indexed on 2012/09/20 9:38 UTC
Read the original article Hit count: 171

Filed under:

sql-server

I have a computed column in MS SQL 2005 that does some VAT calculations. The website uses invoices that can only be generated once and rely on the value in the computed column to work out the VAT.

Unfortunately, a bug was found that means that the the VAT value calculated was off by a few cents. Not a huge problem but we can't change the values from all the previously computed values as these need to be honoured on the invoices.

tldr; How do I change the calculation for a computed column without re-calculating the values that have already be calculated?

Related posts about sql-server

SQL SERVER – Beginning SQL Server: One Step at a Time – SQL Server Magazine

as seen on SQL Authority - Search for 'SQL Authority'
I am glad to announce that along with SQLAuthority.com, I will be blogging on the prominent site of SQL Server Magazine. My very first blog post there is already live; read here: Beginning SQL Server: One Step at a Time. My association with SQL Server Magazine has been quite long, I have written nearly… >>> More
How to install SQL Server 2005 Configuration Manager without installing SQL Server Management Studio

as seen on Server Fault - Search for 'Server Fault'
Hi, I need to configure SQL Server aliases on a public-facing production server. To do that, I need to install SQL Server Configuration Manager. I was not able to find a standalone installer for that, so I am having to install SQL Server 2005 Client Components. This approach is not ideal as we don't… >>> More
[MAJ] SQL Server 2005 Express Edition - La version gratuite de SQL Server 2005

as seen on ASP-PHP.net - Search for 'ASP-PHP.net'
Modification technique pour le site de l'article. >>> More
How to create SQL Server Express DB from SQL Server DB

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a SQL Server 2008 DB. I want to extract SOME tables (and associated schema, constraints, indexes, etc) and create a SQL Server Express DB. It isn't a sync of the target, we stomp on it. We ONLY need to do this in the file system (not across the wire). We are not fond of the synchronization… >>> More
sql server 2000 error, error trying to connect to sql server 2005

as seen on Stack Overflow - Search for 'Stack Overflow'
i am connecting to sql server 2000 on a remote computer with a dotnet application, but when i try to open the connection it gives the following error: When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections What… >>> More

Developer IT