Using the CASE Statement
1> create table employee(
2> ID int,
3> name nvarchar (10),
4> salary int,
5> start_date datetime,
6> city nvarchar (10),
7> region char (1))
8> GO
1>
2> insert into employee (ID, name, salary, start_date, city, regio
3> values (1, 'Jason', 40420, '02/01/94', 'New York', 'W')
4> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (2, 'Robert',14420, '01/02/95', 'Vancouver','N')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (3, 'Celia', 24020, '12/03/96', 'Toronto', 'W')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (4, 'Linda', 40620, '11/04/97', 'New York', 'N')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (5, 'David', 126, '10/05/98', 'Vancouver','W')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (6, 'James', 7006, '09/06/99', 'Toronto', 'N')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (7, 'Alison',9062, '08/07/00', 'New York', 'W')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (8, 'Chris', 2000, '07/08/01', 'Vancouver','N')
3> GO
(1 rows affected)
1> insert into employee (ID, name, salary, start_date, city, regio
2> values (9, 'Mary', 60020, '06/09/02', 'Toronto', 'W')
3> GO
(1 rows affected)
1>
2> select * from employee
3> GO
ID name salary start_date city regio
----------- ---------- ----------- ----------------------- ---------- -----
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 126 1998-10-05 00:00:00.000 Vancouver W
6 James 7006 1999-09-06 00:00:00.000 Toronto N
7 Alison 9062 2000-08-07 00:00:00.000 New York W
8 Chris 2000 2001-07-08 00:00:00.000 Vancouver N
9 Mary 60020 2002-06-09 00:00:00.000 Toronto W
(9 rows affected)
1>
2> --Using the CASE Statement
3> drop procedure sp_demo
4> GO
1>
2> CREATE PROCEDURE sp_Demo
3> @StartDate DATETIME,
4> @ID INT = 1
5> WITH ENCRYPTION
6> AS
7> IF @StartDate > GETDATE()
8> RETURN 1
9> IF @ID < 0
10> RETURN 2
11>
12> SELECT "Result" =
13> CASE WHEN salary > 1000 THEN "> 1000"
14> WHEN salary = 2000 THEN "= 2000"
15> WHEN salary < 8000 THEN "< 8000"
16> END
17> FROM Employee
18> WHERE Id <> @ID
19> AND Start_Date <> @StartDate
20> GO
1>
2>
3> DECLARE @Start_Date_In smalldatetime
4> DECLARE @Id_In INT
5> SET @Start_Date_In = "24 March 2001"
6> SET @ID_In = 1
7> EXECUTE sp_Demo @Start_Date_In, @ID_In
8>
9>
10> drop table employee
11> GO
Result
------
> 1000
> 1000
> 1000
< 8000
> 1000
> 1000
> 1000
> 1000
(8 rows affected)
1>
Related examples in the same category