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VIEWs in SQL

Views are saved queries. They are defined with a single SELECT statement.




USE AdventureWorks2012;

GO


CREATE VIEW HumanResources.EmployeeList

AS

SELECT BusinessEntityID,

JobTitle,

HireDate,

VacationHours

FROM HumanResources.Employee;

GO


SELECT * FROM HumanResources.EmployeeList;

GO


A VIEW is simply a virtual table consisting of different columns from one or more tables.


More examples:


USE inventory;

GO


CREATE VIEW CustomersSalesmenOrders_view

(NumberCustomers, AvgOrders, TotalOrders, OrderDate)

AS

SELECT Count(customer_id),

Avg(purch_amt),

Sum(purch_amt),

ord_date

FROM orders

GROUP BY ord_date;

GO


USE inventory;

GO


CREATE VIEW SalesmenNY13_view

AS

SELECT *

FROM salesman

WHERE city = 'New York'

AND commission > 0.13;

GO


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