发布于 2016-03-20 22:03:44 | 152 次阅读 | 评论: 0 | 来源: 网友投递
Oracle关系数据库管理系统
Oracle Database,又名Oracle RDBMS,或简称Oracle。是甲骨文公司的一款关系数据库管理系统。到目前仍在数据库市场上占有主要份额。
用游标实现,我觉得绝对这种方法比较安全的。
--首先定一个游标把需要用到的一些数据存放到游标中:
declare
CURSOR D_CURSOR_CUS_INFO IS
select t3.id_ as id_,
t3.owe_money_ as owe_money_,
a.heatingArea as heating_area_
from T_CUS_OWE_MONEY_2 t2
left join T_CUS_OWE_MONEY_3 t3 on t2.id_= t3.id_
left join (select s.bh, sum(
case
when s.stkbz='0' then nvl(s.mj,0)
when s.stkbz='1' then 0-nvl(s.mj,0)
end
) as heatingArea from sk s where s.nd = '2008-2009' group by s.bh) a on t2.bh_=a.bh
where t3.owe_money_- t2.owe_money_ = a.heatingArea*5 and t3.OWE_MONEY_ > 0;
begin
FOR everyRow IN D_CURSOR_CUS_INFO
loop
update T_CUS_YEAR_STATUS t
set t.HEATING_AREA_ = everyRow.HEATING_AREA_,
t.OWE_MONEY_ = everyRow.owe_money_
where t.YEAR_ = '2008-2009'
and t.id_ = everyRow.id_;
end loop;
commit;
end;