Database/ Oracle/ Oracle Database/ Release 19 SQL Language Reference Share on LinkedInShare on XShare on FacebookShare on Email OLAP functions returns data from a dimensional object in two-dimension relational format. The OLAP function is: ...
OLAP Functions in Alphabetical Order OLAP Functions By Category 2.1 OLAP Functions in Alphabetical Order AVERAGE_RANK AVG COUNT DENSE_RANK HIER_ANCESTOR HIER_CHILD_COUNT HIER_DEPTH HIER_LEVEL HIER_ORDER HIER_PARENT HIER_TOP LAG LAG_VARIANCE LAG_VARIANCE_PERCENT LEAD LEAD_VARIANCE LEAD_VARIANCE_...
1-14OracleOLAPExpressionSyntaxReference 2 OLAPFunctions TheOLAPfunctiontendthesyntaxoftheSQLanalyticfunctions.Thissyntaxis familiartoSQLdevelopersandDBAs,soyoucanadoptitmoreeasilythan proprietaryOLAPlanguagesandAPIs.UsingtheOLAPfunctions,youcancreateall standardcalculatedmeasures,includingrank,share,priorandfutureperiod...
但周期性刷新 � 一次处理的数据量小 一次处理的数据量大 � 面向应用,事务驱动 面向分析,分析驱动 � 面向操作人员,支持日常操作 面向决策人员,支持管理需要 4 Copyright © 2005, Oracle. All rights reserved. 相关基本概念 �1.维:是人们观察数据的特定角度,是考虑问题时的一 类属性,属性集合构成一...
Precedent set by Microsoft Corp.'s integration of an online analytical processing engine, called OLAP Services, with its SQL Server 7.0 database; How bundling the Express OLAP server would extend the multidimensional functions in Oracle's namesake relational database; Inclusion of multidimensional ...
参数1:以字符串类型表示的URL,指明服务器所在主机名称(例中dbyale.edu)及可能包含的其他信息。E.g. 与数据库通信所用的协议(例中jdbc:oracle:thin:)、数据库系统用来通信的端口号(2000),服务器端使用的特定数据库(univdb)。 参数2:字符串类型的数据库用户标识。
OLAP cubes are pre-calculated, multidimensional data structures built from the data stored in the data warehouse. They organize data along various predefined dimensions and hierarchies (e.g., time, product, location) and measures (e.g., sales, quantity). This pre-calculation of aggregations is ...
As with the other the "All/Total" level in the hierarchy is mapped to either constants or single-row SQL functions. You can examine the mappings for any of these dimensions by clicking on the Mappings tab under the dimension node in the navigator. ...
The Geography, Product and Time templates all included mappings. To view the mappings for the Time dimension, clickMappingsunder TIME in the navigator. As with the other the "All/Total" level in the hierarchy is mapped to either constants or single-row SQL functions. ...
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