SELECT column_name
FROM SYSTAB JOIN SYSTABCOL
   WHERE table_name = 't1'
ORDER BY column_id

CREATE TABLE t1(
   //The column ordering is taken from here
   pk integer primary key,
   c1 char( 30),
   c2 float,
   c3 double );

CREATE PROCEDURE t1_insert ()
RESULT( pk integer, c1 char(30), c3 double )
begin
   ...
end

CREATE PUBLICATION WITH SCRIPTED UPLOAD p1(
   // Order of columns here is ignored       
   TABLE t1( c3, pk, c1 ) USING ( 
     PROCEDURE t1_insert FOR UPLOAD INSERT 
   )
)