1、--创建自动刷新的物化视图 -基表发生commit操作,自动刷新物化视图 create materialized view mv_address2 refresh on commit as select ,, arname from t_address ad,t_area ar where ad.areaid= 2、--向基表插入数据 insert into t_address values(10,'西5旗',2,2); commit; 3、--查询物化视图 s...
SQL> create materialized view mv_name refresh force on demand start with sysdate next to_date( concat( to_char( sysdate+1,'dd-mm-yyyy'),' 22:00:00'),'dd-mm-yyyy hh24:mi:ss'); 3、ON COMMIT物化视图ON COMMIT物化视图的创建,和上面创建ON DEMAND的物化视图区别不大。因为ON DEMAND是默认的...
创建定时刷新的物化视图:create materialized view mv_name refresh force on demand start with sysdate next sysdate+1 (指定物化视图每天刷新一次) 上述创建的物化视图每天刷新,但是没有指定刷新时间,如果要指定刷新时间(比如每天晚上10:00定时刷新一次):create materialized view mv_name refresh force on demand sta...
然后,使用以下命令创建支持快速刷新的物化视图: CREATE MATERIALIZED VIEW YOUR_MATERIALIZED_VIEW_NAME BUILD IMMEDIATE REFRESH FAST ON COMMIT ENABLE QUERY REWRITE; 复制代码 完整刷新(Full Refresh):完整刷新会重新计算整个物化视图,适用于数据集发生变化的情况。你可以使用以下命令创建支持完整刷新的物化视图: CREATE ...
on commit:一旦基表有了commit,即事务提交,则立刻刷新,立刻更新物化视图,使得数据和基表一致。 二、创建定时刷新的物化视图(每天晚上10点刷新): reate materialized view vi_emp refresh force on demand start with to_date('03-02-2012 14:50:59','dd-mm-yyyy hh24:mi:ss') next to_date(concat(to_...
刚看了一下10g的快速刷新限制条件，明确说明了包含分析函数的物化视图是无法快速刷新的：General Restrictions on Fast Refresh The defining query of the materialized view is restricted as follows:The materialized view must not contain references to non-repeating expressions like SYSDATE and ROWNUM....
ON DEMAND物化视图的特性及其和ON COMMIT物化视图的区别,即前者不刷新(手工或自动)就不更新物化视图,而后者不刷新也会更新物化视图,——只要基表发生了COMMIT。 创建定时刷新的物化视图: create materialized view mv_name refresh force on demand start with sysdate next sysdate+1 (指定物化视图每天刷新一次) 上述...
一、物化视图的创建 create materialized view [view_name] refresh [fast|complete|force] [ on [commit|demand] | start with (start_time) next (next_time) ] as {创建物化视图用的查询语句} 具体实例如下: C…
SQL> CREATE Materialized View q2 REFRESH Force3 on commit4 NEXT SYSDATE + 5/(24*60)5 AS6 ...
CREATEMATERIALIZEDVIEW mv_emp_pk REFRESHFASTSTARTWITHSYSDATE NEXT SYSDATE + 1/48 WITHPRIMARYKEY ASSELECT * FROM emp@remote_db --当用FAST选项创建物化视图,必须创建基于主表的视图日志,如下: CREATEMATERIALIZEDVIEWLOGON emp; --Rowid物化视图示例: ...