oracle删除多个分区表

declare
      v_date date;
      v_part_name varchar(50);
begin
      v_date := date'2015-2-4';
     
      while v_date >=  date'2014-10-20' LOOP
        v_part_name := 'LOG_' || to_char(v_date,'yyyymmdd');
        dbms_output.put_line(v_part_name);
        
        execute   immediate 'ALTER TABLE  table_log DROP PARTITION ' || v_part_name;
        
        v_date := v_date -1;
        
      END LOOP;
end;