When a materializedview is fast refreshed, Oracle must examine all of the changes to the mastertable or master materialized view since the last refresh to see if any apply tothe materialized view. Therefore, if any changes were made to the master sincethe last refresh, then a materialized vie...
When a materializedview is fast refreshed, Oracle must examine all of the changes to the mastertable or master materialized view since the last refresh to see if any apply tothe materialized view. Therefore, if any changes were made to the master sincethe last refresh, then a materialized vie...
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...
Um eine materialisierte Ansicht zu erstellen, musst du die CREATE MATERIALIZED VIEW Syntax verwenden, die sich in den verschiedenen SQL-Datenbanken leicht unterscheidet. Die folgenden Methoden zeigen, wie man materialisierte Ansichten in SQL Server, PostgreSQL und Oracle erstellt. Materialisierte Ans...
For information about federated query, see Querying data with federated queries in Amazon Redshift. Syntax CREATE MATERIALIZED VIEW mv_name [ BACKUP { YES | NO } ] [ table_attributes ] [ AUTO REFRESH { YES | NO } ] AS query Parameters BACKUP A clause that specifies whether the ...
Oracle Database Advanced Replicationfor information on materialized views in a replication environment Oracle Data Warehousing Guidefor information on materialized views in a data warehousing environment Prerequisites To drop a materialized view log, you must have the privileges needed to drop a table. ...
Palo system provides a complete set of DDL syntax for materialized views, including creating, viewing and deletion. The DDL syntax is consistent with PostgreSQL and Oracle. Create materialized views First, you need to decide what kind of materialized view to create according to the characteristics ...
Note how both the old and the new values are stored in the same column, VAL. The OLD_NEW$$ column identifies the value as either an old or a new value. Gotcha - Commas The syntax diagrams for theCREATE MATERIALIZED VIEW LOGcommand indicate a comma is required between each component of ...
This chapter discusses materialized view syntax, its different types of materialized views, and finally tools used for analysis and management of materialized views. A materialized view can be used to create a physical copy of data. The benefit of using the materialized view when reading a data...
Make sure that you evaluate each case on its own merits, but options include: CREATE TABLE Statement Trigger Syntax and Examples CREATE VIEW Statement MySQL documentation 仇及矢奈斥反砢卞蕾切引仄凶井? 反中 中中尹