[Centos] Mysql modifies the directory of data files or solves some errors

Reference resources: https://blog.csdn.net/qq_21573899/article/details/78843075 [refer to this document for most of this article] https://www.cnblogs.com/Mchn/p/9984186.html Technological process: 1. Install Mysql normally. The default installation directory is / usr/local/mysql data file directo ...

Posted by jek1134 on Wed, 30 Oct 2019 09:52:51 -0700

Using the idea of encapsulation to write the addition, deletion, query and modification of MySQL

The items involved in this experiment are as follows: It mainly involves four java files: Test.java Userinfo.java Userinfodao.java DBUtil.java Let's explain one by one: The Userinfo code is as follows: this part is mainly entity class, corresponding to database. package com.zhongruan.util.bean; public ...

Posted by NTM on Wed, 30 Oct 2019 08:08:22 -0700

Install and configure MySQL database on Linux platform

Linux system version: CentOS 7.4MySQL version: 5.7.28There are three installation methods in Linux platform, RPM package, binary package and source package. This file mainly takes RPM package as an example to introduce how to install MySQL on Linux platform.Download address: https://dev.mysql.com/downloads/mysql/ The specific steps to install ...

Posted by UnknownPlayer on Tue, 29 Oct 2019 09:27:04 -0700

Pit that Hive stepped on during use

Error 1 when hive starts Cannot execute statement:impossible to write to binary long since BINLOG_FORMAT = STATEMENT... //Error when starting Caused by: javax.jdo.JDOException:Couldnt obtain a new sequence(unique id):Cannot execute statement:impossible to write to binary log since BINLOG_FORMAT = STATEMENT and at least one table uses a storage ...

Posted by FortMyersDrew on Mon, 28 Oct 2019 14:17:31 -0700

iClient for OpenLayers drawing graphics library

iClient for OpenLayers drawing graphics library By yangjl In the process of support, I once met a small customer partner who asked me how to store the drawn graphics. In fact, there are many ways. I chose a simpler way to create my own service by using nodejs and connect mysql to store the graphics ...

Posted by kbrij on Sun, 27 Oct 2019 20:06:31 -0700

Flink learn from 0 to 1 -- how to customize Data Source

Preface In Learn Flink from 0 to 1: introduction to Data Source In this article, I will introduce Flink Data Source and user-defined Data Source briefly. In this article, I will introduce it in more detail and write a demo for you to understand. Flink Kafka source Preparation Let's take a look at the demo for Flink to get data from Kafka ...

Posted by altemur on Sun, 27 Oct 2019 01:19:27 -0700

[python data analysis practice] visualization of box office data analysis data

Catalog Figure 1 trend of monthly ticket house every year Figure 2 total box office value, total number of films released and number of audience Figure 3 total box office and daily average box office Figure 4 Relationship between single ticket office and release month In the previous section ...

Posted by dsnhouse on Sat, 26 Oct 2019 20:43:49 -0700

Introduction to SQL server manual injection

Catalog 0x01 SQL server Foundation 0x02 basic injection Some versions of SQL server have been installed by hackers. Please check the details at the end of this article. 0x01 SQL server Foundation Before learning to inject, the most important thing is to understand the specific things of SQL server, so as to better inject operations. System libr ...

Posted by mikem562 on Sat, 26 Oct 2019 13:26:43 -0700

Separation of reading and writing of mysql database by maxscale

Mysql read write separation The query request and write request of client accessing data are processed by different database servers respectively. Why data read-write separation Reduce the concurrent access pressure of single server and improve the utilization of machine hardware The server that pro ...

Posted by alireza on Sat, 26 Oct 2019 12:12:36 -0700

Using docker to build php+nginx+mysql development environment on Mac

I. preparationAdvantages of Docker to build environment: Simple operation, rapid construction and environmental isolation Common Docker operation commands and parameters: docker search # Find image from Docker Hub docker images # View local mirror list docker pull # Pull or update the specified image from the image warehous ...

Posted by cmburns69 on Sat, 26 Oct 2019 11:48:56 -0700