teradata views

2014-06-08 Baoxinjian1. usage A materialized view is a database object 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 based on remote tables and can also be referred to as snapshots. For replication, materialized views allow you to maintain a copy of the remote data locally

Materialized View creation Syntax:CREATE materialized VIEW PCTFREE pctused Tablespace BUILD immediate| deferred--How to createenable| DISABLE query rewrite--support for querying overridesREFRESH [On prebuilt table]--creates a materialized view on a table that already exists, and the query rewrite for this materialized view requires that the parameter query_rewrite_integerity be set to trusted or stale_toleratedAs (Create materialized view Log on TableName with [PRIMARY key| ROWID];Drop materiali

This script is used to refresh related views when deleting or adding fields, and check the validity of views, functions, and stored procedures. None -- View, stored procedure, function name DECLARE @ NAMENVARCHAR (255); -- local cursor DECLARE @ CURCURSOR -- automatically modify the unfilled status to SET @ CURCURSORSCROLLDYNAMICFORSELECTNAMEFROM This script is used to refresh related

User input/The output is basically based on the view, but with some exceptions, it may need to directly act with the framework, and how to transmit data between views in the case of multiple views. When using the menu, you will find that when a menu is not mapped for processing, it is forbidden. In the case of multiple views, the menu status and processing in

Overview:In the development of ASP. NET Web form, the concept of user control is frequently used to reduce duplication of code and facilitates page modularity, which is also introduced in ASP. "Partial View".1. Create a partial view:In Solution Manager, locate the shared folder under the Views folder, right-click Add View, select Create as Partial view,2. Modify the partial view:1 3, referencing the distribution view in other

1. What is Index is the list of data in the data table and the corresponding storage location. Using indexes can speed up data search in the table or view. 2. Indexes in Index classification databases are classified into clustered indexes and non-clustered indexes. SQLServer2005 also provides unique indexes, index views, full-text indexes, and xml indexes. Aggregation Cable 1. What is Index is the list of data in the data table and the corresponding s

returnview["Index"];8 };9 }Ten}Other/homemodule.cs1 Public classHomemodule:nancymodule2 {3 PublicHomemodule ():Base("/other")4 {5get["/"] = _ = = {returnview["Index"]; };6 }7}HomeModule.cs1 Public classHomemodule:nancymodule2 {3 PublicHomemodule ()4 {5get["/"] = _ ~ =6 {7 returnview["Index"]; 8 };9 }Ten}Similarly, we define the view of the corresponding

ArticleDirectory Note: View Concept View is a transformation of the original database data, and is another way to view the data in the table.Method. You can think of a view as a moving window through which you can see the data you are interested in. A view is obtained from one or more actual tables whose data is stored in the dataLibrary. The tables used to generate a view are called the base tables of the view. A view can also beGenerated in another view. The view definition e

Built-indatabase ObjectsOther objects created with the database:· Data Dictionary· Performance tablesPl/sql Packages· Database event triggersData Dictionary· Central Toevery Oracle Database· Describes the database and it ' s objects· Contains read-only tables and views· Stored in the SYSTEM tablespace· Owned by the user SYS· Maintained by the Oracle server· Accessed with SELECTBase Tables Data Dictionary viewsThe data dictionary contains and parts:·

Generic views 1. First glance at generic viewsGeneric views are actually a set of views functions, but these views functions are awesome.Help me write it. You can use it. This is more like a views library, but it focuses more on the followingSituations:1) complete a simple t

The combination of the MVC view and the Controller object results in a model/view structure that still separates the data from the way it is presented to the user, making it possible to display the same data in several different views and implement a new type of view without altering the underlying data structure. In order to handle data input flexibly, the concept of delegation is introduced. There's something about introducing a delegate in this fra

A view is a logical table based on one or more tables or views. It does not contain data and allows you to query and modify the data in the table. A view-based table is called a base table, which is an Oracle database.There are five types of objects: tables, views, sequences, indexes, and synonyms. A view is a SELECT statement stored in the data dictionary. You can create a view to extract a logical set or

A view is a logical table that is based on a table or multiple tables or views, and does not contain data, which allows you to query and modify the data in the table. The table on which the view is based is called the base table, and Oracle's database objects are grouped into five categories: tables, views, sequences, indexes, and synonyms. A view is a SELECT statement stored in a data dictionary. You can

Tags: database index, views, triggers, stored procedures, cursors and other concepts of understandingUnderstanding of indexes, views, cursors, stored procedures, and triggersUnderstanding of indexes, views, cursors, stored procedures, and triggers1. Index1-1. Overview of the IndexWe combine a list of one or more columns in a table with the physical addresses reco

Ø Index1. What is an indexAn index is a list of data in a data table and a corresponding storage location that can be used to increase the speed of finding data in a table or view.2. Index classificationthe indexes in the database are divided into two main categories: Clustered and nonclustered indexes . SQL Server 2005 also provides unique indexes, indexed views, full-text indexes, XML indexes, and so on. clustered and nonclustered indexes are the mo

One ActionResult is located in two views- When using MVC for a project, an ActionResult is usually a View, so that the corresponding Return View (); can find the corresponding View below, which is based on a principle, "conventions are greater than configurations", but sometimes we need to jump to different views in an ActionResult to display them on the interface. Here we do not have to jump to the r

Recently, some colleagues mentioned about the use of ng-view, in fact, I do not understand, because recently has been doing angularjs rearch, so I saw some of the foreign blog about Ng-view. Did the ASP. MVC4 know, we will have a corresponding controller and views, there is a routerconfig. In fact, there are similar things in Angularjs. Below I will build a ANGULARJS demo from the ASP. NET-based MVC framework.A. Create a file directory:A. Controller f

The syntax for creating a view in Oracle is very important, because creating a view in Oracle makes it one of the most common operations. Before learning the syntax for creating a view in Oracle, let's take a look at what a view is. A view is a logical table based on one or more tables or views. It does not contain data and allows you to query and modify the data in the table. A view-based table is called a base table. A view is a select statement sto

Data in a database is stored in a table , whereas a view is simply a result set of one or more tables that are combined according to a condition, in general you can modify the data in the table with SQL statements such as Update,insert,delete. The view can only be a select operation . However, there are also updatable views, and operations such as Update,insert and delete for such views will eventually be u

How do I switch views in the CAD editor? And initialize the view? When the architects finished editing a CAD drawing, but in the process of editing the use of a two-dimensional view, where we view the CAD drawing, in order to view the convenience of sometimes need to switch views of the CAD drawing, then how to switch views in the CAD editor? And initialize the v