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
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...
7.2.2 The Physical Storage for the Materialized View The materialized view has a storage specification where you can specify the tablespace to store the data in, the initial allocation size and the size, of its extents. The syntax and semantics of the storage specification are the same as for...
Materialized views can be used in a number of ways and almost identical syntax can be used to perform a number of roles. For example, a materialized view can be used to replicate data, which was formerly achieved by using the CREATE SNAPSHOT command. Now CREATE MATERIALIZED VIEW is a synon...
To evaluate this option, measure the performance and execution time of your SQL. For more information, see CREATE TABLE Statement, Trigger Syntax and Examples, and CREATE VIEW Statement in the MySQL documentation. Document Conventions Oracle JSON document support and MySQL JSON...
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 ...
You must have been logged in with your dba account rather than as the SYSADM schema owner. The syntax of your MV create statement will create the MV in your dba schema. Once you corrected the error with the rowid, Oracle tried to go ahead and actually create the MV. But to create an...
So, basically I needed something like a MySQL view with a cache, such that when queried it gives me the data without executing queries over 200 databases. CREATE MATERIALIZED VIEW Doesn’t Exist In MySQL But, there is no MySQL syntax for creating materialized views. Youcannotsay ...
The ability of materialized view creator 110 to analyze object-oriented syntax in DDL commands to create objected oriented materialized views sets it apart from conventional systems that create materialized views. Another reason materialized view creator 110 needs the ability to recognize and analyze ...