oracle中，拼接的字符串给游标赋值

create or replace procedure test(tableName varchar2) is
TYPE cur_type IS REF CURSOR;
cur cur_type;
ajob varchar2(255 char);
curSql varchar2(255 char);
begin
cursql :='select job from '||tableName;
dbms_output.put_line('cursql'||cursql);
open cur for cursql;
loop
fetch cur into ajob;
exit when cur%notfound;
update emp set job=job||'1' where job=ajob;
dbms_output.put_line('ajob'||ajob);

end loop;
close cur;

end;