sql dynamic order by

--Dynamic Order By

create table Bankers(
    BankerID             Integer,
    BankerName           VARCHAR(20),
    BankerContactLName   VARCHAR(20),
    BankerContactFName   VARCHAR(20),
    BankerCity           VARCHAR(20),
    BankerState          VARCHAR(20),
        BankerZipCode        VARCHAR(20),
    BankerPhone          VARCHAR(20)
 )
GO


insert into Bankers values (1, 'ABC Inc.','Joe','Smith','Vancouver','BC','11111','111-111-1111');
insert into Bankers values (2, 'DEF Inc.','Red','Rice', 'New York', 'DE','22222','222-222-2222');
insert into Bankers values (3, 'HJI Inc.','Kit','Cat',  'Paris',    'CA','33333','333-333-3333');
insert into Bankers values (4, 'QWE Inc.','Git','Black','Regina',   'ER','44444','444-444-4444');
insert into Bankers values (5, 'RTY Inc.','Wil','Lee',  'Toronto',  'YU','55555','555-555-5555');
insert into Bankers values (6, 'YUI Inc.','Ted','Larry','Calgary',  'TY','66666','666-666-6666');
insert into Bankers values (7, 'OIP Inc.','Yam','Act',  'San Franc','FG','77777','777-777-7777');
insert into Bankers values (8, 'SAD Inc.','Hit','Eat',  'Orland',   'PO','88888','888-888-8888');
 insert into Bankers values (9, 'DFG Inc.','Sad','Lee',  'Wisler',   'PL','99999','999-999-9999');
 insert into Bankers values (0, 'GHJ Inc.','Bit','Lee',  'Ticker',   'MN','00000','000-000-0000');
 
 


 DECLARE @ORDERBY  VARCHAR(20)
 SET @ORDERBY =  1
 
 SELECT BankerName,
  BankerCity + ', ' + BankerState + ' ' + BankerZipCode AS ADDRESS
 FROM Bankers
ORDER BY CASE
WHEN @OrderBY = 1 THEN BankerName 
WHEN @OrderBY = 2 THEN BankerCity 
WHEN @OrderBY = 3 THEN BankerState 
WHEN @OrderBY = 4 THEN BankerZipCode END DESC