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1/03/2018

SQL Views

SQL Views

A VIEW is a virtual table, through which a selective portion of the data from one or more tables can be seen. Views do not contain data of their own. They are used to restrict access to the database or to hide data complexity. A view is stored as a SELECT statement in the database. DML operations on a view like INSERT, UPDATE, DELETE affects the data in the original table upon which the view is based.
The Syntax to create a sql view is
CREATE VIEW view_name 
AS 
SELECT column_list 
FROM table_name [WHERE condition]; 
  • view_name is the name of the VIEW.
  • The SELECT statement is used to define the columns and rows that you want to display in the view.
For Example: to create a view on the product table the sql query would be like
CREATE VIEW view_product 
AS 
SELECT product_id, product_name 
FROM product; 

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