Filtering for Null Values with a Stored Procedure : Procedure « Procedure Function « SQL Server / T-SQL Tutorial






4>
5> create table Bankers(
6>    BankerID             Integer,
7>    BankerName           VARCHAR(20),
8>    BankerContactLName   VARCHAR(20),
9>    BankerContactFName   VARCHAR(20),
10>    BankerCity           VARCHAR(20),
11>    BankerState          VARCHAR(20),
12>    BankerZipCode        VARCHAR(20),
13>    BankerPhone          VARCHAR(20)
14> )
15> GO
1>
2> insert into Bankers values (1, 'ABC Inc.','Joe','Smith','Vancouver','BC','11111','111-111-1111');
3> GO

(1 rows affected)
1> insert into Bankers values (2, 'DEF Inc.','Red','Rice', 'New York', 'DE','22222','222-222-2222');
2> GO

(1 rows affected)
1> insert into Bankers values (3, 'HJI Inc.','Kit','Cat',  'Paris',    'CA','33333','333-333-3333');
2> GO

(1 rows affected)
1> insert into Bankers values (4, 'QWE Inc.','Git','Black','Regina',   'ER','44444','444-444-4444');
2> GO

(1 rows affected)
1> insert into Bankers values (5, 'RTY Inc.','Wil','Lee',  'Toronto',  'YU','55555','555-555-5555');
2> GO

(1 rows affected)
1> insert into Bankers values (6, 'YUI Inc.','Ted','Larry','Calgary',  'TY','66666','666-666-6666');
2> GO

(1 rows affected)
1> insert into Bankers values (7, 'OIP Inc.','Yam','Act',  'San Franc','FG','77777','777-777-7777');
2> GO

(1 rows affected)
1> insert into Bankers values (8, 'SAD Inc.','Hit','Eat',  'Orland',   'PO','88888','888-888-8888');
2> GO

(1 rows affected)
1> insert into Bankers values (9, 'DFG Inc.','Sad','Lee',  'Wisler',   'PL','99999','999-999-9999');
2> GO

(1 rows affected)
1> insert into Bankers values (0, 'GHJ Inc.','Bit','Lee',  'Ticker',   'MN','00000','000-000-0000');
2> GO

(1 rows affected)
1>
2>
3> CREATE PROCEDURE usp_SalesPersonInATerritoryOrNot
4> @TID int = NULL
5> AS
6> IF @TID IS NOT NULL
7>     SELECT BankerName
8>     FROM Bankers
9>     WHERE BankerID = @TID
10> ELSE
11>     SELECT BankerName
12>     FROM Bankers
13>     WHERE BankerID IS NULL
14> GO
1>
2> EXEC usp_SalesPersonInATerritoryOrNot 1
3> GO
BankerName
--------------------
ABC Inc.

(1 rows affected)
1> EXEC usp_SalesPersonInATerritoryOrNot NULL
2> GO
BankerName
--------------------

(0 rows affected)
1> EXEC usp_SalesPersonInATerritoryOrNot
2> GO
BankerName
--------------------

(0 rows affected)
1>
2> drop PROCEDURE usp_SalesPersonInATerritoryOrNot;
3> GO
1>
2> drop table Bankers;
3> GO
1>








21.8.Procedure
21.8.1.calls the procedure
21.8.2.Declare a variable in a procedure
21.8.3.Stored Procedures as Parameterized Views
21.8.4.PRINT information out of a PROCEDURE
21.8.5.Procedure as a view
21.8.6.Return a value out of a procedure
21.8.7.Returning Values from a View as Stored Procedure Output Parameters
21.8.8.Filtering for Null Values with a Stored Procedure
21.8.9.Managing a Transaction Inside a Stored Procedure
21.8.10.Encrypting a Stored Procedure