mysql materialized view

A materialized view is a database object that contains a query result. It is a local copy of remote data or is used to generate a summary table based on the sum of data tables. Materialized View stores data based on remote tables, also known as snapshots. Materialized vi

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

Materialized View is a special physical table. The Materialized view is relative to a common view. A common view is a virtual table, which has many application limitations. Oracle converts any

Materialized View is a special physical table. The Materialized view is relative to a common view. A common view is a virtual table, which has many application limitations. Oracle converts any

An Introduction to materialized views: Http://blog.csdn.net/tianlesoftware/article/details/4713553 On Lao Yang's blog, I saw some column descriptions, sorted them out, and reproduced them. The original Article link is as follows: Rapid refresh of materialized views (1) Http://yangtingkun.itpub.net/post/468/14245 Rapid refresh of materialized views (2) Http://y

The materialized view concept is similar to the summary table in discoverer. At the discoverer management end, you can create a different summary table. In the discoverer query, discoverer first parse the query to determine whether the query can use the corresponding summary table, if you can, will rewrite the query to query the corresponding summary table.An exampleWith the following example, the use of

Create a materialized view. What is a materialized view? The materialized view is a database object that contains a query result. It is a local copy of remote data or is used to generate a summary table based on the sum of data ta

Label: 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 a

In 11.2, materialized view logs also add features that, for local materialized views, can now be refreshed using the commit SCN instead of the timestamp method in the previous version. Look at a simple example: Sql> SELECT * from V$version; BANNER -------------------------------------------------------------------------------- Oracle database11genterprise Ed

The quick refresh mechanism of Oracle materialized view is completed by materialized view logs. How can Oracle quickly refresh multiple materialized views through a materialized view lo

Updatable materialized view description1. updatable materialized views must belong to a materialized view group.2. the updatable materialized view is always based on a single table, alt

declare--materialized views can be divided into three types:* Contains materialized views of aggregation* Contains materialized views of the connection only* Nested materialized viewsThe limitations of the fast refresh of three materialized views are very different, but not

Usage and summary of Oracle Materialized View What is a materialized view? Materialized View is a database object that contains query results. It is a local copy of remote data or used to generate a summary table based on the sum

11. materialized view log management the materialized view log is a table that maintains the history of operations on the materialized view. To create a materialized

Materialized views are a feature built in Oracle for a long time, while PostgreSQL also developed functional code very early in the way similar to createtableas .... Materialized views are a feature built in Oracle for a long time, while PostgreSQL also developed functional code very early in the way similar to create table .... Materialized views are a feat

In the company's project, if you need to retrieve data from the databases of other systems for statistical analysis, you should use Oracle's ODI tool for data extraction, however, the database users provided by the other party do not have any objects, but only have the permission to query all tables. Therefore, data inversion cannot be performed. Therefore, we decided to use the materialized view to retriev

Original Url:http://lzfhope.blog.163.com/blog/static/636399220124942523943/?suggestedreadingwumiiEnvironment Oracle 10g 10.2.0.4 Linux 64See Oracle's own documentation-sql reference for a large and professional look.To tell the truth, Oracle needs to learn too much, each looking past, it is too cumbersome.So if you can have an overview of materialized views, that's the most convenient. Mainly related to contentMaterialized

Create Materialized View Details I. What is a materialized view? Materialized View is a database object that contains query results. It is a local copy of remote data or used to generate a summary table based on the sum of data ta

1. Even if you are disconnected from the primary site or the primary materialized view site, you can query and update datasets that have been copied to the local site (dataset ). 2. Requirements for replication over multiple master sites 1. Even if you are disconnected from the primary site or the primary materialized view