建立檢視：

create or replace force view view_owners
as
select * from T_OWNERS

drop view view_owners

create or replace  view view_owners
as
select * from t_Owners where ownertypeid = 1

select * from view_owners where ownertypeid = 1

update T_owners  set name = '范冰冰' where id = 1
 

select * from view_owners where ownertypeid = 1

--對錶進行查詢

select * from T_Owners where ownertypeid = 1

--帶檢查約束的檢視

--根據地址表（T_ADDRESS）建立檢視 VIEW_ADDRESS2 ,內容為區域 ID 為 2 的記錄。
create or replace view view_address 
as
select * from T_ADDRESS where areaid = 2
with check option 


--執行不成功的語句  帶約束的檢視，不可以修改條件，修改其他的屬性可以
update view_address set areaid = 3 where id = 4
 

create or replace view view_address2 
as
select * from T_address where areaid = 2
with read only

--查詢該檢視
select * from view_address2 
--修改後會出現錯誤
update view_address2 set name = '區域' where id = 3

--建立帶錯誤的檢視
create force view view_temp 
as
select * from T_temp

--查詢顯示業主編號，業主名稱，業主型別名稱
create or replace view view_owners
as
select ot.id 業主編號,ot.name 業主名稱,ow.name 業主型別 
from T_Owners ot ,t_Ownertype ow
where  ot.ownertypeid = ow.id

select * from view_owners
 --進行資料的修改
 update view_owners set 業主名稱 = '範冰' where 業主編號 = 1--可以修改成功
 --在進行修改業主型別
 update view_owners  set 業主型別='居民' where 業主編號 = 1

---建立檢視，按年月統計水費金額，
create or replace view view_account 
as
select year 年份 ,month 月份 ,sum(money) 金額
from T_account group by year ,month
order by year , month 
--查詢
select * from T_account
 

--查詢地址 ID,地址名稱和所屬區域名稱
create materialized view view_address 
as 
select ad.id,ad.name 地址 ,ar.name 區域 from T_address ad ,T_area ar
where ad.areaid = ar.id
--------------------------------
create  materialized  view view_address
as
select id,name,(select name from T_area where id = areaid) from T_address
---------------------------------------------
select * from view_address

--向表中新增一條記錄
select * from T_address
insert into T_address values (9,'巨集福苑小區',1,1)
--沒有進行重新整理，預設手動重新整理
begin
  DBMS_MVIEW.refresh('view_ADDRESS','C');
end;
--建立自動重新整理的物化檢視 

create materialized view view_address2 
refresh 
on commit
as 
select ad.id,ad.name adname,ar.name arname
from t_address ad ,t_area ar 
where ad.areaid = ar.id

select * from view_address2

--建立不生成資料的物化檢視
create materialized view view_address3
build deferred
refresh 
on commit
as 
select ad.id,ad.name 地址, ar.name 區域
from t_address ad ,t_area ar
where ad.areaid = ar.id
--查詢該檢視
select * from view_address3

---執行下列語句生成資料
begin
DBMS_MVIEW.refresh('view_ADDRESS3','C');
end;

--建立增量重新整理的物化檢視
--如果建立增量重新整理的物化檢視，必須首先建立物化檢視日誌

create materialized view log on t_address with rowid;
create materialized view log on t_area with rowid

--建立的物化檢視日誌名稱為 MLOG$_表名稱
--建立物化檢視
create materialized view view_address4
refresh fast 
as 
select ad.rowid adrowid ,ar.rowid arrowid ,ad.id,ad.name 地址, ar.name 區域
from t_address ad ,t_area ar
where ad.areaid = ar.id

--查詢物化檢視
select * from view_address4
--插入資料
select * from T_address
insert into t_address values (10,'居寧花園',2,2)
commit;
delete * from t_address where id = 9


--手動重新整理
begin 
  Dbms_Mview.refresh('view_address4','C');
end;