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Hive common functions, window functions, UDF, UDTF

1. System built-in function View the functions provided by the systemhive> show functions; Displays the usage of the...
12:21 28 November 2021

07 - Figure 4 Harry Potter's test (25 points)

07 - Figure 4 Harry Potter's test (25 points) Harry Potter is going to have an exam. He needs your help. This course is about the ability to chan...
10:06 28 November 2021

Experiment 3 transfer instruction jump principle and its simple application programming

1. Experimental task 1 use any text editor to enter the 8086 assembler source code task1.asm. ...
9:21 28 November 2021

The differences between hive query statement and mysql

These are the two tables emp and Dept often used in online database examples. The first is dept and the second is emp ...
8:59 28 November 2021

The sixth sort -- quick sort

void quickSort(vector<int>& v, int left, int right) { if (left >= right)return; int pirot = v[right]; int l...
8:58 28 November 2021

[Linux] interprocess communication mechanism -- Pipeline

Interprocess communication mechanism Interprocess communication mechanism, also known as IPC mechanism, includes pipelin...
6:38 28 November 2021

Code works round #756 (Div. 3)

Code works round #756 (Div. 3) [1611A]. Make Even Idea: there are only four cases. If the last person is even, you need ...
6:17 28 November 2021

[high concurrency] deeply analyze the source code of ScheduledThreadPoolExecutor class

original text    https://xie.infoq.cn/article/79486af98d788161e46e3ca9b In the column [high concurrency topics...
6:00 28 November 2021

nfs server building and client mounting under CentOS 7 & Firewall opening with fixed port

1, Environmental preparation 192.168.56.101: Server 192.168.56.102: client 2, Set up NFS server Set up nfs on server 192...
4:44 28 November 2021

uaf logic questions BUUCTF hacknote

First, the title is a menu title. Manually identify and rename the title in ida, as shown in the figure: ...
4:16 28 November 2021

Kubernetes(K8S) installation tutorial (practice)

reference resources: https://www.cnblogs.com/Sunzz/p/15184167.html 1, Installation environment description hardware req...
2:37 28 November 2021

RenderTexture of CommandBuffer learning

RenderTexture of CommandBuffer learning ...
2:01 28 November 2021

Experiment 3 transfer instruction jump principle and its simple application programming

empirical conclusion 1. Experimental task 1 Using any tex...
1:55 28 November 2021

Day 1 - Web APIs

Learning objectives: Elements can be obtained by ID, elem...
12:21 27 November 2021

Initialization of Spring @Bean instance

brief introduction We all know that Spring ha...
23:35 26 November 2021

Multi target tracking based on PP-YOLO Tiny and DSST algorithm

1 project background Target tracking in video...
21:02 26 November 2021

Vue + element UI custom theme, custom theme switching

         Record the problems encountered in the project, and provide a choice fo...
19:31 26 November 2021

Configure logback log for spring boot

Configure logback log for spring boot As mentioned in the previous introduction to spring boot, the default log print of...
19:14 26 November 2021

Developing GUI desktop application by golang

Development of GUI desktop application by golang (I) Basi...
18:43 26 November 2021

No one uses collections better than I do! Yes, it's a collection in dart

brief introduction There are three sets in dar...
17:51 26 November 2021

LeetCode 1320. The second refers to the minimum distance of input -- Dynamic Programming -- interval DP

The second refers to the minimum distance entered The layout of the two finger input method customized keyboard on the ...
17:24 26 November 2021

Simple fitting analysis of e-commerce user data

The main modules used in this analysis are: numpy, matplotlib, pandas, sklearn.liner_ Lineexpression in model ...
16:41 26 November 2021

A common algorithm for machine learning -- decision tree

Decision tree Decision tree is a nonparametric...
14:01 26 November 2021

springboot integrates wechat payment V3 and uses JSAPI to order the whole process. It is easy to read without calling a third-party package (complete source code) and can be enjoyed out of the box

@TOC preface At present, due to the need of the project, a wechat payment function is used for wechat applet. I've been ...
12:40 26 November 2021

What exactly is a reentry lock? Please, find out at once!

Hello, I'm Lao Tian. Let's talk about re entering the lock today. ...
11:49 26 November 2021

Penetration-N rebound shell methods

1, What is a rebound shell? The reverse shell...
9:47 26 November 2021

Problems encountered by TextField component in fluent

TextField component is almost a component that will be used in development. Two very difficult problems will be encounte...
8:56 26 November 2021

PHP network learning notes synthesis

PHP case ...
8:17 26 November 2021