oracle函数和存数过程转成mysql

create or replace function public_f_get_bsc012
(
v_id in varchar2
)
return varchar2
as
v_temp varchar2(200);
begin

select bsc012 into v_temp from sc05 where bsc010=v_id;
return v_temp;

exception when others then
return '';
end ;
初学，以上是oracle函数，在mysql上一直没写对，求大侠指教