ORACLE : Materialized view- change START WITH CLAUSE

Question

我使用以下代码创建了一个物化 View :

CREATE MATERIALIZED VIEW M_USER_HIERARCHY 

BUILD IMMEDIATE
REFRESH COMPLETE
START WITH TO_DATE('25-Aug-2009 10:34:24','dd-mon-yyyy hh24:mi:ss')
NEXT SYSDATE + 1     
WITH PRIMARY KEY
AS 
SELECT   * FROM V_USER_HIERARCHY;

但是，我希望能够在执行此代码后更改“开始日期”。
我一直在调查ALL_MVIEW_ *表，但找不到START_DATE的设置在哪里。

有谁知道如何更改实例化 View 的开始日期？

Answer 1

这真的很简单。

SQL> create materialized view emp_data
  2  as select * from emp
  3  /

Materialized view created.

SQL> ALTER MATERIALIZED VIEW emp_data
  2     REFRESH COMPLETE
  3     START WITH TRUNC(SYSDATE+1) + 12/24
  4     NEXT SYSDATE+1
  5  /

Materialized view altered.

SQL>