Mysql decompression and installation of Censos - yellowtong

mysql is installed by decompressing the installation mode, so that we can install the version we want. The advantage of this installation mode is that I can install it wherever I want. It's easy and pleasant. The installation method of this device is similar to that of jdk, that is, decompressing, and then configuring permissions, services, ...

Posted by vB3Dev.Com on Mon, 04 May 2020 07:09:18 -0700

New performance exchange partitions of MySQL 5.6

Note: the content of the article originated from the network and was obtained through our own experiment; however, the reference article address was not recorded at that time. If you find any infringement problem, please leave a message. ~~When the partition is MySQL version 5.1, support for partition has been added.The process of partitionin ...

Posted by scorphus on Mon, 04 May 2020 04:56:13 -0700

SQL Server Database Foundation (the most commonly used database and table building, 54 classic cases and syntax formats)

Building database and table: if DB_id('TicketManager ')is not null --Judge whether the database already exists drop database TicketManager --Remove the existing database go create database TicketManager --New database on ( name='TicketManager ',--Database name filename='E:\CS Review cases of Architecture\TicketManager\DB\TicketManager. ...

Posted by waltonia on Mon, 04 May 2020 04:11:09 -0700

Java WEB -- file upload

The recently learned file upload in the web phase, I just want to record it, help myself review and help you learn. Generally, I will save the uploaded file under the web inf in the server, because the user will not directly access it, and the path we save to the database is generally the path. There is no demonstration of database upload path. ...

Posted by notionlogic on Mon, 04 May 2020 03:50:44 -0700

Kettle database configuration extraction

When using the ETL tool Kettle, in order to make the job or transformation universal, sometimes we need to separate the connection configuration of the database from the script or transformation. Here is a scheme, which mainly involves the following files: # By default, these two files are in the user directory of the system. If you configure t ...

Posted by watson516 on Mon, 04 May 2020 00:04:15 -0700

Hadoop Ecosphere-Ranger Data Security Management Framework

* Hadoop Ecosphere-Ranger Data Security Management Framework Author: Yin Zhengjie Copyright Statement: Original work, decline to reprint!Otherwise, legal liability will be pursued.        Introduction to Ranger Apache Ranger is a data security management framework designed to fully understand the Hadoop ecosystem.It provides a unified ...

Posted by mcirl2 on Sun, 03 May 2020 23:33:49 -0700

SQLite realizes user login function

SQLite realizes user login function void login::on_LoginToMain_clicked() { //The login button needs to determine whether the user name and password correspond correctly //If there is an error, a prompt dialog box will pop up //-------------------------------------- //Use SQlite to compare user name and password QSqlDa ...

Posted by ninevolt1 on Sun, 03 May 2020 21:36:07 -0700

Summary of JSP scrambling

Specify the encoding format on the jsp page to ensure that it is consistent with the character set of mysql: <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> Step 1: make sure the project code is UTF-8 Step 2: ma ...

Posted by gigabyt3r on Sun, 03 May 2020 21:19:25 -0700

How to insert test data in MySQL

There are two methods for inserting MySQL test data: Select the priority (generate test data in combination with PHP > use stored procedures). Use stored procedures (it is recommended to use this method when the test data is less than 1000) The specific code is as follows: To create a table: 1 mysql> create table TB1( 2 -> id in ...

Posted by myraleen on Sun, 03 May 2020 12:39:21 -0700

24 days of egg learning notes: mongoose default parameters, modular

1. mongoose default parameter: when adding data, if no data is passed in, the data configured by default will be used. Connect to the database, a warning is reported below, useNewUrlParser:true This attribute will identify the db needed to verify the user in the url. You do not need to specify it before upgrading. You must specify it before u ...

Posted by grungefreak on Sun, 03 May 2020 08:26:24 -0700