Transferred from: http://blog.csdn.net/joshua_peng1985/article/details/6213593 Introduction
Materialized views are a special physical table, and the materialized view is relative to a normal view. Normal view is a virtual table, the application of a large limit, any query on
(1) materialized view
SQL Server does not have the concept of materialized views, but instead uses indexed views instead (refer to: https://msdn.microsoft.com/zh-cn/library/ms191432.aspx and https:// msdn.microsoft.com/zh-cn/library/aa290257%28vs.71%29.aspx), the materialized view
ORA-12034: The materialized view log on SCOTT. "USER_TABLE" is newer than the last refresh
Recently, when I handed over my work, I found that several schedule jobs were not successfully executed. I have shown that one of them is due to database migration, if the IP address of the host that calls dblink is not changed in tnsnames, an error cannot be reported in view
Label:Original address: http://www.cnblogs.com/Ronger/archive/2012/03/28/2420962.html Materialized views are a special physical table, and the materialized view is relative to the normal view. The normal view is a virtual table, the limitations of the application are large,
Create materialized view [view_name]Refresh [Fast|complete|force][On [Commit|demand] |Start with (start_time) next (next_time)]As{Create a query statement for materialized views}
These are the common syntax for Oracle to create materialized views (materialized
1. Summary of Materialized View definitions:The materialized view is a database object that contains a query result (the system regularly refreshes the data). The materialized view is not read during use, it is used to pre-calcula
Oracle materialized view log structure
To refresh a materialized view quickly, you must create a materialized view log. This article briefly describes the meaning and usage of each field in the
Materialized View, which is used to pre-calculate and save the results of time-consuming operations such as table join or aggregation. In this way, these time-consuming operations can be avoided during query execution, and get results quickly. Materialized views are similar to indexes in many aspects: materialized view
Oracle Materialized View
In actual work, multiple data sources are synchronized to a single database for data analysis. These data can not be synchronized in real time. Generally, we extract data from the statistical analysis database through regular tasks for application use.
The general synchronization method can synchronize full and incremental data through the timestamp (the original data may change and
Oracle Materialized View Details
In actual work, multiple data sources are synchronized to a single database for data analysis. These data can not be synchronized in real time. Generally, we extract data from the statistical analysis database through regular tasks for application use.
The general synchronization method can synchronize full and incremental data through the timestamp (the original data may ch
I. Theoretical part
The materialized view of Oracle is a database pair that includes a query result, which is a local copy of the remote data, or is used to generate a summary table based on the sum of the data tables. Materialized views store data that is based on remote tables, or it can be called snapshots.
The materiali
First, Oracle materialized view syntaxCreate materialized view [view_name]Refresh [Fast|complete|force][On [Commit|demand] | Start with (start_time) next (next_time)]As{Create a query statement for materialized views}These are the syntax commonly used by Oracle to create
Materialized views are similar to indexes in many aspects: materialized views are used to improve query performance, while materialized views are transparent to applications, adding or deleting materialized views does not affect the correctness and validity of SQL statements in applications.
Materialized views are a special physical table, and the materialized view is relative to the normal view. The normal view is a virtual table, the limitations of the application are large, any query on the view, Oracle is actually
Document directory
Timing The Refresh
Summary
A materialized view is a database object that contains the results of a query. they are local copies of data located remotely, or are used to create summary tables based on aggregations of a table's data. materialized views, which store data based on remote tables are also, know as snapshots.
A
The materialized view of Oracle is a database pair that includes a query result, which is a local copy of the remote data, or is used to generate a summary table based on the sum of the data tables. Materialized views store data that is based on remote tables, or it can be called snapshots.
Materialized views can be u
Tags: blog http io ar using Java for SP dataRecently learned a materialized view, just as the manager is not, the results of the study posted for everyone to study it.Let's take a look at the general meaning of materialized view, feel the definition of Baidu is goodBaidu Code
Cleanup of materialized view registration information
The log cleanup of materialized views is performed automatically by Oracle. Oracle determines when the materialized view log is deleted based on the registration information on the Ma
Often listen to the students of Oracle materialized view, one of the functions of materialized view is that you can implement query rewriting, it sounds like a tall feeling, SQL Server also has the function similar to Oracle materialized
Materialized views in Oracle
A materialized view is a database pair that includes a query result, which is a local copy of the remote data, or is used to generate a summary table based on the sum of the data tables. Materialized views store data that is based on remote tables, or it can be called snapshots.
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