orcal批量生成百万数据

  如果开始加了50条，就原来的基础上再进行递增

insert into vip_cust_md
( id,
  mum,
  caeated,
  created_by)
(select 
  'aa'||LPAD(ROWNUM+50,9,'0'),
  '5600021234521',
   sysdate,
  'sys',from dual connect by <=20);