Oracle: SQL Loader Example: Evaluate a value with case when

create table tq84_sql_loader_case_when (
   type_   varchar2(3),
   num     integer
);

load data
infile 'load.dat' -- "str '\r\n'"
truncate into table tq84_sql_loader_case_when
fields terminated by ';' (
  type_ "case :type_ 
               when '1' then 'foo'
               when '2' then 'bar'
               when '3' then 'baz'
               else        '???'
         end",
  num char
)

2;42
1;9
3;18
6;123
3;5

$ sqlldr control=load.ctl userid=rene/rene@ora18