olap pivot

This time to bring you the PHP fast sorting algorithm using the steps in detail, the PHP quick sorting algorithm considerations are what, the following is the actual case, take a look. Basic idea: Quick Sort (Quicksort) is an improvement to the bubbling sort. His basic idea is: by a trip to the sorting of the records into separate two parts, some of which are smaller than the other part of the key words recorded, you can proceed to the two parts of the record to continue the rapid sorting, the

First, Quick sort introductionThe quick sort is a sort of division exchange proposed by C.r.a.hoare in 1962. It adopts a strategy of division, which is usually referred to as the Division method (Divide-and-conquermethod).Algorithm idea: 1. First take an array from the array as a pivot, generally select the first or last element of the array as the pivot, of course, you can choose Other, in the following op

In this information age, every minute produces huge amounts of data per second. In the massive data, it is very important to dig out useful data and to display the data in a more humane and intuitive way. This article will introduce 7 top open source BI (business Intelligence) software and reporting tools for the analysis and processing of business data, and hope to help you.BirtBIRT (Business Intelligence and Reporting Tools) is an Eclipse-based reporting system that was open-source by IBM in 2

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Bi-open the door to Business IntelligenceTo meet the requirements of enterprise managers, a Bi system must take the following steps:1) to integrate data in various formats, clear the error records in the original data-data preprocessing requirements.2) data pre-processing should be centralized in a unified manner-metadata (metaDaTa, data warehouse (DA)TaWarehouse) requirements;3) Finally, professional statistics should be made on a large centralized dataset to discover new opportunities that are

1, the basic idea of fast sorting:Quick sort using the idea of divide and conquer, the waiting sequence is divided into two parts by a sort of order, and some of the recorded keywords are smaller than the keywords recorded in the other part. The two parts of the records are then sequentially sorted to achieve the order of the entire sequence.2. Three steps to quickly sort:(1) Select Benchmark: In a pending sequence, pick an element in a certain way, as a "datum" (

Quick sort the simplest interval segmentation form has been introduced in the previous blog post, is one-way processing, the following describes the quick sort of other forms, are two-way processing, that is, the processing mode is smaller than pivot to the left, more than pivot to move to the right, when the two directions intersect, Move pivot to a position in

Original: http://blog.csdn.net/insistgogo/article/details/77850381, the basic idea of fast sorting:Quick sort using the idea of divide and conquer, the waiting sequence is divided into two parts by a sort of order, and some of the recorded keywords are smaller than the keywords recorded in the other part. The two parts of the records are then sequentially sorted to achieve the order of the entire sequence.2. Three steps to quickly sort:(1) Select Benchmark: In a pending sequence, pick an element

System.Collections.Generic; Using System.Linq; Using System.Web; Using System.Web.UI; Using System.Web.UI.WebControls; Using Officeopenxml; Using Officeopenxml.table; Using Officeopenxml.conditionalformatting; Using Officeopenxml.style; Using Officeopenxml.utils; Using OfficeOpenXml.Table.PivotTable; Using System.IO; Using System.Data.SqlClient; Using System.Data; namespace Excelpivot.web {public partial class Index:System.Web.UI.Page {protected void Page_Load (object Sende R, EventArgs e

copy of the data to the path added in the workflow. ● Ole db command: executes an ole db command for each row in the data stream. ● Percentage Sampling: capture data samples from the data stream by using the percentage of the total number of rows in the data stream. ● Pivot: pivot data on a column to an unrelated format. Pivot a table means that data can be divi

Quick sorting (with Java implementation and analysis) To sum up the quick sorting, if any errors or deficiencies exist, please share with us.1. Fast sorting The idea of fast sorting is similar to that of Merge Sorting. Quick sorting by selecting an element, called a pivot element or sharding element, puts it in a proper position so that the element before it is no greater than it, the element after it is not smaller than it, and then the

);Return;}// Optimization 2: carefully select the partitioning element, that is, pivot// If it is a small-scale array (size // If it is an array of medium size (7 = // If it is a large-scale array (size> 40), take a pseudo-medium number (in the middle of the number s) from the nine specified numbers)Int m = off + (len> 1 );If (len> 7 ){Int l = off;Int n = off + len-1;If (len> 40 ){Int s = len/8;L = med3 (x, l, l + s, l + 2 * s );M = med3 (x, m-s, m,

the slicing of data organized in multidimensional form (Slice), diced (Dice),Drillthrough (Drill-downand theroll-up), Rotation (Pivot) and other analysis actions, in order to analyze the data, so that users can view the data in the database from multiple angles, multi-sided, so as to deeply understand the information contained in the data. Business decision-making uses the above data mining software results, and