In SQL, views contain rows and columns similar to a table, however, views don't hold the actual data. You can think of a view as a virtual table environment that's created from one or more tables so that it's easier to work with data. We can create views in SQL by using the CREATE VIEW command. For example, FROM Customers WHERE Country = 'USA';

Query: Output: We can create a view using CREATE VIEW statement. A View can be created from a single table or multiple tables. Syntax: SELECT column1, column2..... First, we will create a demo SQL database and table, on which we will use the View command. In this example, we create a View named DetailsView from the table StudentDetails. Query:

Besides the standard role of basic user-defined views, SQL Server provides the following types of views that serve special purposes in a database. An indexed view is a materialized view. This means the view definition has been computed and the resulting data stored just like a table. You index a view by creating a unique clustered index on it.

You can use views to create and hide complex queries while allowing the end-users to call and get the results quickly. Memory efficiency: While storing and executing queries from actual tables can consume disk space, views are just virtual tables. Hence, they don’t consume as much space as the actual tables do.