How to create a view in sql

Question

Satya Karki · Answer

Hi, you can check my below article for a detailed understanding of View. https://www.c-sharpcorner.com/article/mssql-view-update-in-underlying-table-and-impact-in-net-application/

Uday Dodiya · Answer

In SQL, a view is a virtual table based on the result-set of an SQL statement. A view contains rows and columns, just like a real table. The fields in a view are fields from one or more real tables in the database. You can add SQL statements and functions to a view and present the data as if the data were coming from one single table. A view is created with the CREATE VIEW statement. CREATE VIEW Syntax CREATE VIEW view_name AS SELECT column1, column2, ... FROM table_name WHERE condition; Note: A view always shows up-to-date data! The database engine recreates the view, every time a user queries it. SQL CREATE VIEW Examples The following SQL creates a view that shows all customers from Brazil: Example CREATE VIEW [Brazil Customers] AS SELECT CustomerName, ContactName FROM Customers WHERE Country = 'Brazil'; We can query the view above as follows: Example SELECT * FROM [Brazil Customers]; The following SQL creates a view that selects every product in the "Products" table with a price higher than the average price: Example CREATE VIEW [Products Above Average Price] AS SELECT ProductName, Price FROM Products WHERE Price > (SELECT AVG(Price) FROM Products); We can query the view above as follows: SELECT * FROM [Products Above Average Price]; SQL Updating a View A view can be updated with the CREATE OR REPLACE VIEW statement. SQL CREATE OR REPLACE VIEW Syntax CREATE OR REPLACE VIEW view_name AS SELECT column1, column2, ... FROM table_name WHERE condition; The following SQL adds the "City" column to the "Brazil Customers" view: Example CREATE OR REPLACE VIEW [Brazil Customers] AS SELECT CustomerName, ContactName, City FROM Customers WHERE Country = 'Brazil'; SQL Dropping a View A view is deleted with the DROP VIEW statement. SQL DROP VIEW Syntax DROP VIEW view_name; The following SQL drops the "Brazil Customers" view: Example DROP VIEW [Brazil Customers];

Brahma Prakash Shukla · Answer

https://www.tutorialspoint.com/sql/sql-using-views.htm

Rajanikant Hawaldar · Answer

https://www.c-sharpcorner.com/UploadFile/9d28bf/about-views-in-sql-server/

Rajeev Kumar · Answer

CREATE VIEW view_name AS SELECT column1, column2, ... FROM table_name WHERE condition;