Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

function can return multiple value?how give give sample coding

Answer Posted / manikanta.srinu

Function can't return multiple value.
There are 3 types of functions are in sql server.
1.Scalar valued function:This function can return only one
value.
2.Inline table-valued functions:return a single table
variable that was created by a select statement.
3.Multitable valed function
:Returns a table variable whose structure was created by
hand, similar to a Create Table statement. It is useful
when complex data manipulation inside the function is
required.
1). Scalar Function
create function scalarvalue()
returns int
as
begin
return 1
end
Go
Scalar functions are usually deemed a performance hit,
because they are executed on a per-row basis.
Calling Function
select dbo.scalarvalue()

Note: We can create @temp variable in sclar function.
2). Inline table-valued functions
create function inlinetable()
returns table
as
RETURN SELECT a.SaleId, a.CustomerID, b.Qty
FROM Sales.Sales a INNER JOIN Sales.SaleDetail b
ON a.SaleId = b.SaleId
INNER JOIN Production.Product c ON b.ProductID =
c.ProductID
WHERE a.ShipDate IS NULL
go

Calling Function
select * from dbo.fun1()

Note: We can’t create @temp variable in inline table
valued function.
2). Multi-statement table-valued functions
create function fun2()
RETURNS @CustomerOrder TABLE
(SaleOrderID INT NOT NULL,
CustomerID INT NOT NULL,
OrderDate DATETIME NOT NULL,
OrderQty INT NOT NULL)
AS
BEGIN
DECLARE @MaxDate DATETIME

SELECT @MaxDate = MAX(OrderDate)
FROM Sales.SalesOrderHeader
WHERE CustomerID = @CustomerID

INSERT @CustomerOrder
SELECT a.SalesOrderID, a.CustomerID, a.OrderDate,
b.OrderQty
FROM Sales.SalesOrderHeader a INNER JOIN
Sales.SalesOrderHeader b
ON a.SalesOrderID = b.SalesOrderID
INNER JOIN Production.Product c ON b.ProductID =
c.ProductID
WHERE a.OrderDate = @MaxDate
AND a.CustomerID = @CustomerID
RETURN
END
Calling Function
select * from dbo.fun2()
Note: We can create @temp variable in multi statement
table valued function.

Is This Answer Correct ?    7 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What schema means?

888


How do you create an update query?

962


What is sql and its types?

1187


Why we use stored procedure instead of query?

998


Where can I learn sql for free?

987


What is record variable?

988


Why do we use subquery?

1014


What are its different types of dbms?

1005


What are synonyms in sql?

972


Explain foreign key in sql?

1022


how can we repair a mysql table? : Sql dba

979


What is sql prepared statement?

983


Does sap use sql?

993


What type of join is sql join?

982


What is graph sql?

991