Sqlserver null

Thanks anyway. M A Srinivas. On May 29, pm, i Did you test Result will be null if all are null. Robert Klemme. On Kind regards robert. Thanks for your reactions, There is this problem with Srinivas' solution and the solution Robert supplies is actually what I already proposed myself. Namely separating the case where all columns are null from those cases where some ar not null, and this is very slow. I'm talking about hundreds of columns and millions of rows.

I was actually thinking more of a solution to ignore the nulls, rather than on the fly setting them to 0. More suggestions are appreciated. Regards, Paul. Oops yes! Must put brain in gear before letting fingers loose on keyboard. Thanks for picking this up. Artemakis Artemiou. Views: 8, The simple things in life are often the best. Can you please mek me under stand why these two below statements are different..

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You want to know the average deductible value for those that DO have insurance. This is easy by just doing AVG deductible and it does exactly what you want, counting only those that DO have insurance — but it emits a pesky warning that in this case is not actually a problem. Hi Dave! We met last year. Having it ON seems like a good thing to me because, as it says in Books Online…. Considering that it defaults to on in almost everything that accesses a database and has some seriously bad things happen when you turn it off, it would be more interesting to ask if anyone has explicitly turned it off in all those other places.

I Would like to raise an error when this occurs. Null values cannot be used as information that is required to distinguish one row in a table from another row in a table, such as primary keys, or for information used to distribute rows, such as distribution keys. This need for three-valued logic is a source of many application errors.

These tables provide examples of this behavior. Skip to main content. This browser is no longer supported.