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SQL views are virtual tables that are defined by a query, using the CREATE VIEW statement. They allow you to present data from one or more tables in a customized way without storing the data separately. Views can simplify complex queries, control access to data, and provide a level of abstraction over the database schema.
Creating and Using Views
To create a view, you use the CREATE VIEW statement followed by the view's name and the query that defines the data to be included in the view. Here's an example of creating a simple view:
CREATE VIEW Brazil_Customers ASSELECT CustomerName, ContactNameFROM CustomersWHERE Country = 'Brazil';Once created, you can query a view just like you would a regular table:
SELECT * FROM Brazil_Customers;This query will return all customers from Brazil, as defined by the view. The key advantage here is that the view always shows up-to-date data from the underlying tables1.
Modifying Views
SQL CREATE VIEW, REPLACE VIEW, DROP VIEW Statements …
Try It Yourself
Edit the SQL Statement, and click "Run SQL" to see the result.
SQL Injection
SQL in Web Pages. SQL injection usually occurs when you ask a user for input, …
SQL Dates
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SQL Server Functions
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SQL Check Constraint
SQL CHECK Constraint. The CHECK constraint is used to limit the value …
SQL Auto Increment
The MS SQL Server uses the IDENTITY keyword to perform an auto-increment …
SQL CREATE VIEW Keyword
The CREATE VIEW command creates a view. A view is a virtual table based on …
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