olap pivot

data dump, it will be in the db of a point in time state, "extract", according to the DW storage model requirements, "conversion" Data format, and then "load" to the DW process, it should be emphasized that the DB model is ER model, conform to the paradigm design principle, and DW data model is a snowflake structure or star structure, with the topic-oriented, problem-oriented design ideas, so the DB and DW model structure is different, Conversion is required. (4)

Tags: result 9.png Style list technology Share union All aggregation CREATE TABLE syntaxBefore we know the use of the pivot relational operator, we cooperate with the case by aggregating the function ... When the wording to achieve the corresponding function, Microsoft in SQL Server 2005 and later version of the can pivot relational operator, Povit provides syntax than a series of select ... The syntax spec

I. Preface Recently, I saw some questions on the forum that involved column and column rotation. I thought that the new pivot expression of SQL Server 2005 can be used in this way. Ii. Feasibility Analysis Distinct and undistinct are new Relational operators that can be specified in the from clause of the query. They perform some operation on an input Table value expression and generate an output table as the result. The distinct operator rotates row

The total number of columns in the Excel Pivot table is displayed at the bottom by default. Sometimes the number of rows in the pivot table is large. To view the total number, you need to drag the scroll bar, which is inconvenient, in this case, it is much easier to display the total number of columns at the top of the pivot table. This Excel file does not provid

Fortunately I have done, leaving a foundation here. The simplest description of PIVOT and Unpivot-row-column, column-Change!!! SSIS also have such a control, the effect is the same. ---------------------------------------------------------------------PIVOT demo from MSDN document---------------- ---------------------------------------------------use ADVENTUREWORKS2008R2; Go select DaysToManufacture, standar

In DW/BI systems, relational databases are the best place to store and manage data. But the relational database itself is not intelligent enough. The relational database lacks the following features: Rich metadata to help users navigate the data and create queries. Powerful analytic calculations and functions, defined in context-sensitive query statements. Outstanding, consistent query performance in a variety of ad hoc queries. On the Microsoft platform, the preferred a

The pivot point belongs to the foot yangming stomach meridian, is the hand yangming large intestine to raise the Acupoint, is located at the navel side two inch, just for the person among points, such as heaven and earth intercourse occasion, lifts the voicing the hinge.flange fl-5_ Elbow | flanged | tee | pipe | pipe CAP | pipe | reducer | Carbon STEEL pipe | Alloy fitting |30 elbow |45 degree elbow |60 elbow |90 degree Elbow | Pipeline Tendering | P

, for example, for OLAP analysis, we look for people who do not pay the money to the telecom operator in a timely manner. In general, we will analyze that people with low incomes often do not pay in time. Through analysis, it is found that 71% of the poor who do not pay in time. Data Mining is different. It analyzes the cause by itself. The reason may be that people outside the Fifth Ring Road do not pay the money in time. These conclusions are of gre

The topic of today's blog is: parameter linkage solution. Environment: Data Warehouse + OLAP (cube) + Reporting Service. Effect: multiple parameters (1, 2 ,......) Achieve interaction. First, let's talk about the principle. A data warehouse consists of fact tables and dimensions. I understand that fact tables are actually a table composed of multiple dimensions related to a topic and the values of these dimensions. A dimension is a dictionary. When yo

development and OLAP related small projects, there is a question that we must clarify. It is also a very important one, that is, what the customer actually needs? what exactly do they want us to develop? What are the functions? This is a user requirement analysis that is often emphasized in system analysis. it must be in place. However, as a system analyst, after learning about the user's needs analysis, there is another important problem: techn

same time, to maintain data consistency, Oracle needs to use latch to serialize user operations. When a user obtains latch, other users can only wait. The more users get the data block, the more obvious the waiting. This is the hot issue. This kind of hot speed may be data blocks or rollback blocks. Data blocks are usually caused by uneven data distribution in the database. If the data blocks are indexed, you can create reverse data blocks to achieve data redistribution, for data blocks in a ro

How to select appropriate tools in the data warehouse project, so that engineering and technical personnel and business management personnel often face difficulties when choosing OLAP tools, generally, we should consider the features, applicability, performance, scalability, and future development trends of the product in five aspects. In general, the importance of these five aspects is very difficult, but you should pay attention to the following poi

OLAP system in doing statistical analysis task is very consuming resources, if just and your job task time coincide, will cause the system resources nervous, their task runs very slowly. Here is a statement that adjusts the start and length of the Oracle statistics task, bypassing the peak of the business and making the statistics task run when the system is idle 1. Query automatic statistic Information task execution time select T1.window_name, T1.

Many times users will have such a need, is qlikview design a good pivot table, if directly with the Qlikview Send to Excel function, then the export has no pivot table effect, such asThen I use a macro to export this pivot table, after the export format and Qlikview consistent, the code is as follows:Sub ExportSet xlapp = CreateObject ("Excel.Application") ' Defi

Isn't an Excel Pivot Table really commercial intelligence? The answer to the question raised by the title is: No, but it does play a very important role. In general, a PivotTable is a data collection tool; you will find many spreadsheet applicationsProgramThis function is available in the same way as dedicated Bi tools. Microsoft Excel has its own

Pivot is used to rotate column values to column names (row to column), and SQL Server 2000 can be implemented with an aggregate function with a case statementThe general syntax for pivot is: Pivot (aggregate function (column) for column in (...)) As PFull syntax:Table_sourcePIVOT (Aggregation function (value_column)For Pivot_columnIn ()Unpivot is used to convert