oracle between clause cause ORA-12015: cannot create a fast refresh materialized view 从一个复杂的查询

Question

我使用脚本成功创建了物化视图：

CREATE MATERIALIZED VIEW orderitem_mvmt
BUILD IMMEDIATE
REFRESH FAST
ON DEMAND
AS
select * from order_item;

为了提高性能我改成了这样

CREATE MATERIALIZED VIEW orderitem_mvmt
BUILD IMMEDIATE
REFRESH FAST
ON DEMAND
AS
select * from order_item
where to_char(last_upd,'yyyy') between to_char(sysdate,'yyyy')-3 and  to_char(sysdate,'yyyy')+3;

运行脚本引发错误 ORA-12015: 无法从复杂查询创建快速刷新实体化视图

我不明白它是如何匹配快速刷新的Restrictions

谢谢。

Answer 1

看看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.

The materialized view must not contain references to RAW or LONG RAW data types.

It cannot contain a SELECT list subquery.

It cannot contain analytic functions (for example, RANK) in the SELECT clause.

It cannot contain a MODEL clause.

It cannot contain a HAVING clause with a subquery.

It cannot contain nested queries that have ANY, ALL, or NOT EXISTS.

It cannot contain a [START WITH …] CONNECT BY clause.

It cannot contain multiple detail tables at different sites.

ON COMMIT materialized views cannot have remote detail tables.

Nested materialized views must have a join or aggregate.

Materialized join views and materialized aggregate views with a GROUP BY clause cannot select from an index-organized table.

您的查询包含 SYSDATE 因此您不能将其用于 FAST REFRESH

oracle between clause cause ORA-12015: cannot create a fast refresh materialized view 从一个复杂的查询

oracle between clause cause ORA-12015: cannot create a fast refresh materialized view from a complex query

oracle

materialized-views