Oracle物化视图

Oracle物化视图。

1、创建物化视图：

create materialized view MV_YHMYDBB PARALLEL 10

refresh force on demand

start with sysdate next trunc(sysdate) + 1 + 5/1440

as

select ……

2、手动刷新物化视图：

alter materialized view MV_YHMYDBB refresh force;

3、修改物化视图下次刷新时间：

alter materialized view MV_XZQYSCTJ

refresh force on demand

next null

4、实表更新：

truncate table mv_sv_dispatch;

insert /*+append*/ into mv_sv_dispatch

select /*+parallel(sd 10)*/ SD.REQUEST_ID,

inform_org_id,

MIN(SD.Dispatch_Date) Dispatch_Date

from SV_DISPATCH SD

WHERE SD.DELETED_FLAG = '0'

and SD.Inform_Org_Type = 'SS'

GROUP BY SD.REQUEST_ID, sd.inform_org_id;

commit;

5、建物化视图索引：

create index idx_MV_XZQYSCTJ_1 on MV_XZQYSCTJ(RECEIPT_DATE)