Question

I have a table as follows:

[ArticleId] int NOT NULL
[AssetId] int NULL
[VideoId] int NULL

Both VideoId and AssetId are nullable, but I was wondering if there is a way to enforce that at least one is populated?

Answer 1

You can add a constraint that check that at least one is not null

ALTER TABLE YourTable 
ADD CONSTRAINT AtLeastOneFilled 
CHECK (ArticleId IS NOT NULL OR AssetId IS NOT NULL OR VideoId IS NOT NULL );