要求把**高於1000的產地為杭州和中國的家電和電子產品放到表productinf_tmp，並轉換商品型別編號為商品型別，商品**高於2000下調5%
create
table
"scott"."productinfo"
(
"productid" varchar2(10),
"productname" varchar2(20),
"productprice"
number(8,2),
"quantity"
number(10,0),
"category" varchar2(10),
"desperation" varchar2(1000),
"origin" varchar2(10),
primary
key ("productid")
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('1', '天堂傘', 59, 50, '1', null, '杭州');
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('2', '夏普lcd-48g100a', 7000, 20, '3', null, '日本');
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('3', '海爾xqb50-918a', 1100, 29, '3', null, '中國');
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('4', '三星xqb50-918a', 3600, 12, '3', null, '中國');
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('5', '華為xqb50-918a', 2500, 111, '3', null, '中國');
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('6', '台電qb50-918a', 400, 129, '4', null, '中國');
insert
into productinfo (productid, productname, productprice, quantity, category, desperation, origin)
values ('7', '恩克斯-918a', 2800, 22, '2', null, '中國');
commit;
create
table
"scott"."categoryinfo"
(
"categoryid" varchar2(10),
"categoryname" varchar2(30),
primary
key ("categoryid")
insert
into categoryinfo (categoryid, categoryname)
values ('1', '雨具');
insert
into categoryinfo (categoryid, categoryname)
values ('2', '路由器');
insert
into categoryinfo (categoryid, categoryname)
values ('3', '電視');
insert
into categoryinfo (categoryid, categoryname)
values ('4', '洗衣機');
insert
into categoryinfo (categoryid, categoryname)
values ('5', '***');
insert
into categoryinfo (categoryid, categoryname)
values ('6', '鞋');
commit;
declare
cur_categoryid categoryinfo.categoryid%type;
cur_categoryname categoryinfo.categoryname%type;
cur_prodrcd productinfo%rowtype;
tmpnum number(8,0);
cursor cur_prdt_catg is
select * from productinfo where productprice>1000
and origin in('中國','杭州') and category in
(select categoryid from categoryinfo where categoryname in('路由器','電視','洗衣機','***'));
cursor cur_catg is
select categoryid,categoryname from categoryinfo where categoryname in('路由器','電視','洗衣機','***');
begin
--把符合要求的資料放進productinfo_tmp
open cur_prdt_catg;
loop
fetch cur_prdt_catg into cur_prodrcd;
if cur_prdt_catg%found then
insert into productinfo_tmp(productid,productname,productprice,quantity,category,desperation,origin)
values(cur_prodrcd.productid,cur_prodrcd.productname,cur_prodrcd.productprice,cur_prodrcd.quantity,cur_prodrcd.category,cur_prodrcd.desperation,cur_prodrcd.origin);
else
dbms_output.put_line('已取出所有資料!共'||cur_prdt_catg%rowcount||'條記錄');
exit;
endif; end
loop;
commit;
--轉換產品型別
open cur_catg;
tmpnum :=0;
loop
fetch cur_catg into cur_categoryid,cur_categoryname;
if cur_catg%found then
update productinfo_tmp set productinfo_tmp.category=cur_categoryname where category=cur_categoryid;
if sql%found then
tmpnum := tmpnum+sql%rowcount;
endif; else
dbms_output.put_line('產品型別轉換完畢!共轉換'||tmpnum||'條記錄');
exit;
endif; end
loop;
--產品**下調
update productinfo_tmp
set productprice=productprice*0.95
where productprice>2000;
dbms_output.put_line('**下調完畢!共下調'||sql%rowcount||'條商品');
commit;
end;
--查詢結果
select * from productinfo_tmp
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