將列添加到物化視圖

Question

我在Oracle中有一個現有的物化視圖。 但我想添加更多列。我看到無法對物化視圖執行 CREATE OR REPLACE，所以我該怎麼做？

謝謝！

Answer 1

將列添加到基表中，然後在MV中運行刷新。

declare 
begin 
    DBMS_SNAPSHOT.REFRESH('your_mv', 'f'); 
end; 

Answer 2

select * from dba_objects where status='INVALID'; 

grant create materialized view to <schema>; 
grant create table to <schema>; 

drop MATERIALIZED VIEW <schema>.<mvname>; 

    CREATE MATERIALIZED VIEW <schema>.<mvname> 
    (...) 
    AS SELECT (...); 

select * from <schema>.<mvname>; 


revoke create materialized view from <schema>; 
revoke create table from <schema>; 

select * from dba_objects where status='INVALID';