I'm having problems setting a computed column as not null.
What I want to achieve is C001,C002..., etc. and at the same time set it as not null.
I have read on a forum that this can be achieved by using the default value 0 for NULL values.
E.g., ISNULL(Price + Taxes, 0)
I have tried to apply to this formula:
But it didn't seem to work. Can anyone tell me what am I missing?
ALTER CreditCard accountNo AS ISNULL('C'+right('000'+CONVERT([varchar](3),[idCreditCard],(0)),(3)),0)
Thanks in advance!