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 […]

5 (1)

2006-10-10

210 reads

Blogs

Daily Coping 1 Oct 2020

By

I started to add a daily coping tip to the SQLServerCentral newsletter and to...

PASS Virtual Summit 2020 Conference Sessions

By

Whether you are a SQL Server Database Administrator or Infrastructure Architect, you should be...

Running Express Edition in a Container–#SQLNewBlogger

By

Another post for me that is simple and hopefully serves as an example for...

Read the latest Blogs

Forums

Internal Query Processor Error: The query processor could not produce a query pl

By YSLGuru

Is there a standard method for troubleshooting the below error? Internal Query Processor Error:...

How to extract string between variable characters?

By C-M-A

Hi All, I've got a nasty column that I need to get the name...

Making 1 row from 2

By SQLHeap

I'm struggling a bit here. It seems easy, but I 'm not getting it....

Visit the forum

Ask SSC

SQL Server Q&A from the SQLServerCentral community

Get answers