You have a SQL query that combines customer data and order data. The query includes calculated columns.
You need to create a database object that would allow other users to rerun the same SQL query.
What should you create?
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A. B. C. D.B
A view is a virtual table whose contents are defined by a query. A view acts as a filter on the underlying tables referenced in the view. The query that defines the view can be from one or more tables or from other views in the current or other databases.
https://docs.microsoft.com/en-us/sql/relational-databases/views/viewsThe correct answer is B, a view.
A view is a database object that is essentially a virtual table that is based on the result set of an SQL query. When you create a view, you define the query that will be used to populate the view. This means that any user who has permission to access the view can retrieve the data in the same way that they would retrieve data from a table.
In this scenario, creating a view would be the best option because it would allow other users to easily rerun the same SQL query without having to remember the exact syntax or recalculating the same columns each time. The view would essentially store the SQL query, including any calculated columns, as a reusable object in the database. Users could then query the view to retrieve the same data without having to recreate the query each time.
Here's a brief overview of the other options and why they wouldn't be the best choice:
A. An index is a database object that is used to improve the performance of queries by providing a faster way to retrieve data from a table. While indexes can be useful for improving query performance, they are not designed to store the result of a query.
C. A scalar function is a database object that takes one or more input values and returns a single value. While scalar functions can be useful for performing calculations on data, they are not designed to store the result of a complex query.
D. A table is a database object that stores data in rows and columns. While you could store the results of your query in a table, this would require you to manually insert the data each time you wanted to update it, and it would not allow other users to easily rerun the same query. Additionally, if the underlying data changes frequently, storing the results in a table could quickly become outdated and inaccurate.