excel count duplicate values only once

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Excel Entry Tips

In the use of Excel, the first need to input data, to make their own data recorded skillfully, recorded province, or need to master a lot of practical skills. Input skills Quickly fill in the same content When multiple cells are selected, enter

Skills in word and execl

1. How to use a duplicate number in Word In word, we can place a duplicate number on the toolbar. Open the "tool-custom" Command Option and open the "Custom" dialog box. Select "All commands" in the "category" column under the "command" tab.. All

Javascript skills summary accumulated-(in progress)

109. Change the status bar self. Status = "";// 110. Change the window size window. resizeTo (200,300 );// 111. Change the mouse style body {cursor: URL ('mouse. Ani '); SCROLLBAR-BASE-COLOR: #506aa8; SCROLLBAR-ARROW-COLOR: # 14213f ;}// 112.

Efficiency Comparison between two databases and four paging Algorithms

From: http://www.cnblogs.com/jyk/archive/2008/08/04/1260406.html   PagingAlgorithmThere is no difference between speed and speed. What determines the reaction speed is --Can indexes be effectively used!   Algorithm Rating

R Data Type _r

R data Type R data storage type base type The most basic type is the type that stores a single numeric value. Mainly including Numeric, Integer, Complex, Character, Logical and so on. Digital Numeric or "Double" is the way in which values are stored

OLAP Engine--kylin Introduction

Kylin is a set of OLAP systems developed by ebay, and unlike Mondrian, it is a MOLAP system that is primarily used to support data analytics businesses in the big data ecosystem, It mainly uses the Precomputed method to cache the user-defined

EXCL Filter sum

Filtering in Excel is a very common feature. But without knowing whether it was intentional or negligent, Excel did not directly provide some statistical functions after filtering, such as summing, averaging, etc. And because one of the main

Popular Science: Why the String hashcode method selects the number 31 as a multiplier

Https://segmentfault.com/a/1190000010799123?utm_source=tuicool&utm_medium=referral 1. Background One day, when I was writing code, I accidentally opened the String Hashcode method. Then a general look at the implementation of Hashcode, the

Configure RAID10 in Linux

RAID10 (also called RAID1 + 0 or image strip) array combines the features of RAID0 and RAID1 to provide high-performance, fault-tolerant disk input/output operations. In RAID0, read/write operations are performed across multiple drives concurrently;

Reprinted ETL architect interview questions

Reprinted ETL architect interview questions 1. What is a logical data mapping and what does it mean to the ETL team? What is Logical Data ing? What role does it play on the ETL project team? A: Logical Data Map) describes the data definition of the

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