• Interests: Pianos, technology, family, camping, databases

Technical Article

Proper Luhn AddCheckDigit for any length #

Most of the luhn scripts assume that you are working with credit-cards and then IMPROPERLY calculate their luhn check-digit by starting at the left side (assuming that the core number is always 15 digits).  However, if you don't know the length of your core number, then such an approach will fail when the length is […]

(1)

You rated this post out of 5. Change rating

2006-10-10

233 reads

Blogs

Monday Monitor Tips: AI Query Analysis

By

AI is everywhere. It’s in the news, it’s being added to every product, management...

AI: Blog a Day – Day 8: RAG – Retrieval Augmented Generation

By

RAG — Retrieval Augmented Generation. we have covered so far — embeddings, vectors, vector...

AI: Blog a Day – Day 7: Vector and Vector Databases

By

Continuing from Day 6 we learned Embeddings, Semantic Search and Checks, on Day 7...

Read the latest Blogs

Forums

I'm thinking about submitting some articles

By Doctor Who 2

I've written some documentation on using different Markdown types of files on GitHub. It's...

Not Just an Upgrade

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Not Just an Upgrade

Restoring On Top I

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Restoring On Top I

Visit the forum

Question of the Day

Restoring On Top I

I am doing development work on a database and want to keep a backup so I can reset my database. I make some changes and want to restore over top of my changes. When I run this code, what happens?

USE Master
BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak'
GO

USE DNRTest
GO
CREATE TABLE MyTest(myid INT)
GO
USE master
RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACE

See possible answers