Oracle Database Data Warehousing Guide for information about the prerequisites that apply to creating data warehousing materialized views Syntax create_materialized_view::= Description of the illustration create_materialized_view.eps (scoped_table_ref_constraint::=, physical_properties::=, materialized...
Oracle中的物化视图(Materialized View)是一种特殊的视图,它存储了查询结果的数据,而不是像普通视图那样仅存储查询的定义。物化视图允许用户对大型数据集进行预先计算和存储,从而提高了查询性能,尤其是在需要频繁访问相同数据集的情况下。 创建物化视图的基本语法 创建物化视图的基本语法如下: sql CREATE MATERIALIZED VIE...
普通租户(Oracle 模式) SQL 语句 DDL CREATE MATERIALIZED VIEW 更新时间:2025-01-17 14:56:41 描述 该语句用来创建物化视图。 物化视图是一种特殊类型的数据库对象,它存储查询结果的副本,并定期刷新(也可以手动刷新)以保持数据的最新状态。物化视图可以包含聚合,连接和子查询等操作,并且可以被索引和分区,以进一步...
CREATE MATERIALIZED VIEW name [build_clause][create_mv_refresh] AS subquery where build_clause is: BUILD {IMMEDIATE | DEFERRED} where create_mv_refresh is: REFRESH [COMPLETE] [ON DEMAND] Description CREATE MATERIALIZED VIEW defines a view of a query that is not updated each time the view...
Oracle Database - Enterprise Edition - Version 11.2.0.2 and later: Create Materialized View Results in ORA-955 But Drop Materialized View Does Not Succeed Either
CREATE/ALTER/DROP MATERIALIZED VIEW LOG CREATE MATERIALIZED VIEW LOG ON [schema.] tablename [ Physical_Attributes_Clause] [TABLESPACE tablespace] [STORAGE Storage_Clause] Creates a materialized view log, which is a … - Selection from Oracle SQL: the Es
無効なマテリアライズド・ビューのリフレッシュについては、「ALTER MATERIALIZED VIEW」を参照してください。 マテリアライズド・ビューの概要は、『Oracle Database概要』を参照してください。 INSTEADOF句の詳細は、「CREATE TRIGGER」を参照してください。
Oracle Database Cloud Schema Service - Version N/A and later: ORA-01031: Insufficient Privileges When Create a Mview in Different Schema
but the database server instance106uses the hidden column to return the same rows in the same order when the materialized view is requested by an external entity multiple times. An unused column is not used at the system level or by external entities. An example of an unused column is a ...
but the database server instance106uses the hidden column to return the same rows in the same order when the materialized view is requested by an external entity multiple times. An unused column is not used at the system level or by external entities. An example of an unused column is a ...