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Tip of the Day
Language: SQL Server
Expertise: Beginner
Mar 24, 1997



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Creating Views

I've got a "new user" question for you. Some of the tables in our databases have several columns containing data that's not used very often. When I'm using ad-hoc queries, it gets cumbersome to scroll around, and I would go crazy if I had to type specific column names each time. I'm sure there must be a more elegant solution. Can you help?

Don't worry, it's not only the new users who haven't discovered the power of views. Check out the CREATE VIEW statement. When you create a view, you'll specify only once the columns you want to use. From that point forward, you can use the view the same way you were using the original table. You can issue queries on the view and greatly reduce the problems you've described. Views can be used to hide sensitive data, or to construct a "window" onto the database that fits a particular user's interaction. For instance, each department in your organization might work with a different view of the same base table. You also can use views to specify a join so that data physically residing in two or more separate tables appears as if it resides in one place. Views can be used in many other ways, limited only by your imagination.

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