NUMBER(p, s) Data Type: Microsoft SQL Server

Question

So, let me start by saying I have had a hard time finding any documentation about this online - hence I am asking, here. I am having to manually calculate the size of a row in Microsoft SQL Server 2008 here at work (I know this can be done via a query; however, do to some hardware issues, it is not presently possible). Either way, I figured this question might help others in the long run:

Within the database that I am working, there are a number of columns with data type NUMBER() - some of which have set the precision and scale for the number. Now, I do know that precision affects size; however, here is the question: what is the range for the disk size of data type NUMBER in SQL Server in bytes (any measurement is fine, actually).

Some documentation will provide the possible ranges of sizes and the corresponding disk size. If you know of any documentation for this data type, please feel free to post.

OBSERVATION:

I have found documentation for type NUMERIC. Is that the same - or a different version of - NUMBER?

Answer 1

As Andrew has mentioned it is a User Defined Type NUMBER since there is no default data type with name as NUMBER in sql server. And no one here can tell you what characteristics this Data type has.

You can execute the below query to find out what all the characteristics of this User defined Data type.

SELECT * 
FROM sys.types
WHERE is_user_defined = 1 
AND name = 'NUMBER'