Saturday, August 27, 2011

Inline Table-Valued Functions

Inline TVF return a table example is given below


create table employee(
ID int,
name nvarchar (10),
salary int,
start_date datetime,
city nvarchar (10),
region char (1))
GO

insert into employee (ID, name, salary, start_date, city, region)
values (1, 'Jason', 40420, '02/01/94', 'New York', 'W')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (2, 'Robert',14420, '01/02/95', 'Vancouver','N')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (3, 'Celia', 24020, '12/03/96', 'Toronto', 'W')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (4, 'Linda', 40620, '11/04/97', 'New York', 'N')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (5, 'David', 80026, '10/05/98', 'Vancouver','W')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (6, 'James', 70060, '09/06/99', 'Toronto', 'N')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (7, 'Alison',90620, '08/07/00', 'New York', 'W')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (8, 'Chris', 26020, '07/08/01', 'Vancouver','N')
GO

(1 rows affected)
insert into employee (ID, name, salary, start_date, city, region)
values (9, 'Mary', 60020, '06/09/02', 'Toronto', 'W')
GO

(1 rows affected)

select * from employee
GO
ID name salary start_date city region
----------- ---------- ----------- -----------------------
1 Jason 40420 1994-02-01 00:00:00.000 New York W
2 Robert 14420 1995-01-02 00:00:00.000 Vancouver N
3 Celia 24020 1996-12-03 00:00:00.000 Toronto W
4 Linda 40620 1997-11-04 00:00:00.000 New York N
5 David 80026 1998-10-05 00:00:00.000 Vancouver W
6 James 70060 1999-09-06 00:00:00.000 Toronto N
7 Alison 90620 2000-08-07 00:00:00.000 New York W
8 Chris 26020 2001-07-08 00:00:00.000 Vancouver N
9 Mary 60020 2002-06-09 00:00:00.000 Toronto W

(9 rows affected)

-- Inline Table-Valued Functions

CREATE FUNCTION myProc(@ID Int)
RETURNS Table
AS
RETURN
(
SELECT ID, Name, Salary FROM Employee
WHERE ID = @ID
1 )
1 GO
SELECT * FROM myProc(1)
GO
ID Name Salary
----------- ---------- -----------
1 Jason 40420

(1 rows affected)

drop table employee
GO


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