mysql - CASE statement not working well -

hey guys new mysql actually..i have wrote code like

 create table customers(    id   int              not null,    name varchar (20)     not null,    age  int              not null,    address  char (25) ,    salary   decimal (18, 2),     primary key (id) );   insert  customers (id,name,age,address,salary)   values (1,'aff',2,3,5); 

my case statement like

 select case when id > 0 set name  = 'sdfsdf'; else set name = 'asd' end case; customers 

when run on sql fiddle gives me error

you have error in sql syntax; check manual corresponds mysql server version right syntax use near 'set name = 'sdfsdf'; else set name = 'asd' end case' @ line 1: select case when id > 0 set name = 'sdfsdf'; else set name = 'asd' end case

can me ..any appreciatd

the correct statement

select  case   when id > 0 'sdfsdf'   else 'asd' end name  customers ;