摘要： ----隐式游标 beginfor c_row in ( select open_time, group_id, sm_code, cnfrom dchncustmsgwhere open_time = '20041109'and sm_code = '3g';)loopdbms_output.put_line(c_row.open_time||'-'||c_row.group_id||'-'||c_row.sm_code||'-'||c_row.cn);end loop;end;----------------- 阅读全文