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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 […]

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2006-10-10

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Question of the Day

Creating JSON II

On SQL Server 2025, what happens when I run this code:

SELECT JSON_OBJECTAGG( N'City':N'Denver' RETURNING JSON)
GO

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