Creating a computed column in SQL Server 2008

Question

I have a SQL Server 2008 database. This database has a Table called \"Book\". \"Book\" has the following properties:

• ID (int)
• Title (nvarchar(256))

Answer 1

You can define the column in your CREATE TABLE as:

AgeInMinutes as (DATEDIFF(minute, PublishDate, GETDATE())

Alternatively, just do

ALTER TABLE Book
ADD AgeInMinutes as (DATEDIFF(minute, PublishDate, GETDATE())