Tag:Blogger

  • Error caused by MySQL version

    Time:2021-9-9

    You can follow the blogger’s personal blog for more information.Author: surpasserLink address:https://surpass.org.cn preface Following a post, the blogger installed the latest version of MySQL container (version 8.0.19) on CentOS. After connecting with the local springboot project and starting the project, the operating login system reported an error. problem See code: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection […]

  • Skill get · windows10 fix any format file to the start screen

    Time:2021-9-8

    Reading time |0.6 minutes word count |960.8 characters primary coverage |1. Introduction & background “Skill get · windows10 fix any format file to the start screen“ Author | SCscHero Writing time | 2021/5/23 PM9:1 Article type |Series Degree of completion |Completed motto Every great cause has a trivial beginning. 1、 Introduction & background    Completion: 100% […]

  • Let’s learn the program together – Gobang

    Time:2021-8-25

    preface When I was a child, I liked to play the built-in block games on TV. At that time, there were many electronic products. I knew the words low and high in primary school, so I saved pocket money and got the advanced version of the game–Bully learning machineI was wrong. It was a “game […]

  • [C + +] ifstream and getline get Chinese garbled code solution

    Time:2021-8-22

    The class reading INI file stepped on a pit. When the configuration file has Chinese parameters, it can not be read correctly. All I read is garbled code. After a long query, it was found that ifstream itself could not normally read the text containing the Chinese path (the specific solution will not be described […]

  • [summary] Maven common dependency packages

    Time:2021-8-10

    Summarizing the Maven dependencies commonly used in the development process can save a lot of time without going to the Maven warehouse every time. -Pom.xml template <?xml version=”1.0″ encoding=”UTF-8″?> <project xmlns=”http://maven.apache.org/POM/4.0.0″ xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd”> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.5.1</version> <relativePath/> </parent> <groupId>com.daoge.seata</groupId> <artifactId>spring-boot-samples</artifactId> <name>spring-boot-samples</name> <version>0.0.1-SNAPSHOT</version> <packaging>pom</packaging> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <maven-deploy-plugin.version>3.0.0-M1</maven-deploy-plugin.version> <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version> […]

  • MSSQL · according to constraints_ Table name query constraint_ Table name

    Time:2021-7-27

    Reading time |0.13 minutes word count |214.4 characters primary coverage |1. Introduction & background MSSQL · according to constraints_ Table name query constraint_ Table name Author | SCscHero Writing time | 2021/7/13 PM11:10 Article type |Series Degree of completion |Completed motto Every great cause has a trivial beginning. 1、 Introduction & background    Completion: 100% a) […]

  • Nine sort specific implementation code

    Time:2021-7-22

    Statement: the content of this article is only for reference. If there is any mistake, the blogger strongly hopes you to point out. If you are the original blogger of a certain knowledge point, if necessary, you can contact me and add a link. The content of this article will be updated according to the […]

  • Operating MySQL with C + +

    Time:2021-7-20

    Statement: the content of this article is only for reference. If there is any mistake, the blogger strongly hopes you to point out. If you are the original blogger of a certain knowledge point, if necessary, you can contact me and add a link. The content of this article will be updated according to the […]

  • Maven multi module error: if you want an embedded database (H2, hsql or Derby)

    Time:2021-6-29

    scene After a maven single module project was transformed into a multi module project, an error was reported *************************** APPLICATION FAILED TO START *************************** ​ Description: ​ Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured. ​ Reason: Failed to determine a suitable driver class ​ ​ […]

  • SQL Server database performance optimization 1 – use distinct with caution to avoid unnecessary distinct [by zhang502219048]

    Time:2021-6-25

    This is an example of database optimization The original use of distinct, reads up to 20000; Optimized to remove distinct and reduce reads to 20   Welcome to reprint, but reprint please be sure to indicate the source and author of the blog!*Source: https://www.cnblogs.com/zhang502219048/p/14743424.html*Author blog Garden blogger: zhang502219048* WeChat official account name: SQL database programming*Wechat: […]

  • SQL Server database performance optimization 2 – avoid recursion of CTE common expressions

    Time:2021-6-22

    This is an example of database optimization1. In the past, the recursion of CTE common expression was used, and the reads reached about 400000. According to the query execution plan, nested loops was used;2. Optimize to get rid of recursion, and use other methods to achieve. The reads is reduced to 2639. Look at the […]

  • After installing Dlib and face_ Recognition, but it can’t be imported in Python ide

    Time:2021-6-12

    In Dlib and face_ After recognition is successfully installed through PIP (how to install through pip is mentioned in the blog’s last essay), it cannot be imported in pychar. After synthesizing all kinds of opinions on the Internet, I found the reasons and shared the solutions below. In pychar   File→Settings→P roject:xxx →Project Interpreter   […]