refresh materialized view

A view is a database that stores only the query statements that define the view (the content is generated when the query is queried), and the materialized view is a view of the content after its query statement is queried and stored (the content is generated when the

data and connection compatibility)-> group compatibility-> aggregation compatibility 2. How to ensure that materialized views can be used?Here, we only talk about three methods to help you use the query rewrite function of the Materialized View:1) constraints;2) dimension;3) describe complex relationships-data Hierarchies;The following are examples of the above

Number of materialized views synchronized 1. The purpose is to synchronize some data in the production database to the Data Warehouse. Considering the cost and convenience, the method of regularly refreshing the Materialized View Number of materialized views synchronized 1. The purpose is to synchronize some data in th

Recently, you need to manually refresh a materialized view after the documents are successfully submitted. The solution was to call dbms_refresh.refresh ('materialized view name') on the After Update trigger of the table. An error was reported during the test. Cause of erro

When refresh fast on demand is used to incrementally refresh the materialized view, the conventional creation step is to first create the materialized view log on the source database, and then create the

view----Create materialized View statements:(2). Create Materializad view syntax in statisticsCreate materialized View Mv_test----Mvtest for materialized

view----Create materialized View statements:(2). Create Materializad view syntax in statisticsCreate materialized View Mv_test----Mvtest for materialized

Materialized view: A special view with physical storage, just like a Table object. Materialized views and tables can be queried directly. It is one of the effective methods to optimize the query performance and improve the efficiency of the system, which is the function of the distributed query through the read-write s

Materialized View synchronization count 1. Usage Now we need to synchronize some data in the production database to the Data Warehouse. Considering the cost and convenience, we need to regularly refresh the materialized view for data synchronization. 2. Overall Implementatio

The 0RA-01400 error is reported when the materialized view is refreshed. Background: materialized view is one of the three major tools for data warehouse refresh. In actual work, it is used for data extraction on heterogeneous platforms. Today, after creating a

of this object. Toad may call this a snapshot snapshots). However, this is annoying, the materialized view written on PLSQL Developer cannot be distinguished in Toad. It seems that both of them are sufficient.Materialized views have the attributes of views. They are based on real tables, which reveal data in real tables in general, and even create almost the same way. However, if it becomes

In recent days, I am responsible for the P project environment to provide a view of the W system, due to complex query logic, data volume is large, resulting in each query view time, query slow, inefficient, by the W system personnel complaints. Think, or change to materialized view, with

Create | view | site Objective: To create a materialized view site that refreshes periodically to obtain changes to the specified table in the main site, which can be used as a query server Steps: 1. To create a materialized view Log table on the primary site CREATE

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

Create | view 1. If you create a base table that is a materialized view of another user table, you need to give the owner of the materialized view the following permissions: Grant CREATE any materialized

The materialized view aims to save some queries that take a long time to obtain results in advance, save the results of these queries to a local copy, and then query the results later, you can query data from the materialized view without querying some remote data tables. This improves the query performance. Create

Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Create materialized view [view_name] Refresh [Fast | complete | force] [ On [commit | demand] | Start with (start_time) Next (next_time) ] As {Query statements for creating materialized views} These are c

B respectively Create table test(Id varchar2 (10) not null primary key,Name varchar2 (20 ),Status varchar2 (1 ),Updatedate date) 2. Create dblink on the database separately Create database link dblink_to_ BConnect to "userid" identified by "password"Using '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP) (HOST = "ipaddress") (PORT = 1521 )))(CONNECT_DATA =(SERVICE_NAME = "SID ")))'; Create database link dblink_to_AConnect to "userid" identified by "password"Using '(DESCRIPTION =(ADDRESS

PostgreSQL version 9.4 has been out for some time, but also updated a lot of content, one of which is more interested in the materialized view of the update, compared to the original materialized view syntax, a new concurrently parameter.first, the new syntax: --Create syntax, no update to create