MySQL

At the beginning of contact with a new thing, I think it is necessary to start with its working principle, to find out the ins and outs of this thing, for the next further study well pave the way, master its principles help us from the overall grasp

First, if the database is the initial landingThe Linux system generates a raw password for the database in the file/var/log/mysqld.log:grep "Temporary password"/var/log/mysqld.log find the original passwordLogin #mysql-uroot-p ' The password you

The modified users are listed as root.first, the root of the original myql password;Method One:Outside the MySQL system, use the Mysqladmin#mysqladmin-u root-p Password "test123"Enter Password: "Enter the original password"Method Two:By logging into

The simplest and most convenient way to create a table is by creating an index directly. Its basic form is as follows:CREATE TABLETable Name (property name data type[integrity Constraint conditions], property name data type[integrity Constraint

1, using navicate export CSV file with Excel open garbledBecause the Excel default encoding is GBK, and the Navicate export data default encoding is Utf-8, so ...Workaround: Open the file with WPS and save it as a new CSV file (

CENTOS7 online upgrade to MySQL:① download MySQL Sourcewget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm② Installing the mysql5.7 sourceYum Localinstall-y mysql57-community-release-el7-7.noarch.rpm③ Installing the database

In MySQL, does the field in the INSERT INTO insertion statement have to fill in all the fields of the table?For example, table Tab_name has (COL1,COL2,COL3,COL4) 4 fields.Just fill in what you need to add, and then write the column name with

Mysql Master-slave replication principleMySQL's master-slave replication is an asynchronous replication process (although it is generally felt to be real-time), the data will be copied from a MySQL database (what we call Master) to another MySQL

One: __init__.py effect:The purpose of the __init__.py file is to change the folder into a Python module , with a__init__.py file in each of the modules in the Python package. Normally the __init__.py file is empty, but we can add additional

First, the primary database configuration1) Modify the master database configuration file[Mysqld]#编号Server-id=1#打开二进制日志Log-bin-master-bin#主数据库日志Log-bin-index=master-bin.index2) Restart dataService mysqld Restart3) MySQL command to view the primary

Connect to local MySQLMysql-u root-pConnect to remote MySQLMysql-u root-p-H 192.168.1.2Export a table in a local database (such as the Users table in export data) Enter the database password after carriage returnmysqldump Databases -u root-p--tables

1. View in NavicateShow variables like ' char% ';Show variables like ' collation_% ';2. View in MySQLThe differences between the two can be found by contrast, so the data in MySQL and navicate are set separately by setSet

Install mysql5.7.21 in Windows, windowsmysql5.7.21 This article shares with you the installation tutorial of mysql5.7.21 for your reference. The specific content is as follows: Installation environment Windows: 64-bit Windows 7 Professional

Windows environment configuration Mysql 5.7.21 windowx64.zip installation-free tutorial details, 1.download mysql-5.7.21-windowx64.zip mysql from the official website 2. decompress the package to the appropriate location (E: \ mysql). I changed the

Common mysql commands at work and common mysql commands Connect to local mysql Mysql-u root-p Connect to remote mysql Mysql-u root-p-h 192.168.1.2 Export a table in the local database (for example, the USERS table in the exported data)Enter the

Install mysql5.7.21 in Windows, windowsmysql5.7.21 The MySQL installer provides an easy-to-use and wizard-based installation experience for all your MySQL software requirements. The product contains the following latest versions: MySQL Server MySQL

Installation and configuration tutorial for mysql 5.7.20 \ 5.7.21 without installation, 5.7.205.7.21 Download and install mysql 5.7.20/5.7.21 for your reference. The specific content is as follows: 1. Download mysql, Select the operating system and

A Preliminary Study on MySQL statistics and estimation methods, and a preliminary study on mysql statistics   The statistical information in the database describes the data distribution in the table to varying degrees. The execution plan obtains the

How to install mysql5.7.21 in win10, win10mysql5.7.21 Install the decompressed Mysql version in win10 as follows: Environment: win10 64-bit Compressed package, After downloading and decompressing the package, go to the folder: Basic configuration

Mysql 5.7.21 unzip the package to install Navicat database operation tool, 5.7.21navicat Install the MySQL decompress version and Navicat database operating tool as follows: 1. Download MySQL 1. You can download the MySQL version. 2. decompress the