declare v_display varchar2(10); begin for i in 1 .. 100 loop for j in reverse 1 .. 10 loop dbms_output.put_line(i || ‘ - ‘ || j); end loop; end loop; end;
Oracle PLSQL Demo - 04.数字FOR LOOP循环[NUMBERABLE (FOR) LOOP]
原文：http://www.cnblogs.com/nick-huang/p/4609056.html