2006-5-350813白衣飘飘的年代.txt

这是一学习的好东西

-- Add/modify columns 
alter table T_CASE add BACKFEE number(10,2);
alter table T_CASE add REALBACKPRICE number(10,2);
-- Add comments to the columns 
comment on column T_CASE.BACKFEE
  is '退款手续费';
comment on column T_CASE.REALBACKPRICE
  is '实际退款金额';