MySQL high-availability read-write split cluster video course Mycat Tutorial

Course Outline:Section 1th MySQL Source compilation installation (centos-6.6+mysql-5.6) 38 minutes2nd MySQL configuration for master-slave replication (centos-6.6+mysql-5.6) 58 minutessection 3rd mycat read-write separation on MySQL master-slave

About MySQL [Err] 1451-cannot Delete or update a parent ROW:A FOREIGN KEY constraint fails

mysql> SET foreign_key_checks = 0; Query OK, 0 rows affected (0.02 sec) mysql> Delete from repositories where repo_name = "watch/sinawatch_agent_update"; Q Uery OK, 1 row affected (0.02 sec) mysql> SET foreign_key_checks = 1; Query OK, 0 rows

Mac version 5.6 MySQL set password

The most MySQL can be set when installed, but the lower version of the seemingly no, need to be installed in order to set up.mysql5.7.18 connection error under Mac, error message: Access denied for user ' root ' @ ' localhost ' (using Password:yes)()

MySQL Seven: Views, triggers, transactions, stored procedures, functions

dba

First, the ViewA view is a virtual table (not a real one), which is essentially "getting a dynamic dataset from an SQL statement and naming it", which you can use as a table by simply using "name" to get a result set.Using views we can take out the

Export files with Chinese data in MySQL under Linux from 0 to 1 (not complete)

Annotated version number:Here's what it looks like when you've just installed MySQL:First, solve the Secure_file_priv problem:Since the file is read-only, it can only be changed in root mode. Edit mysqld.cnf using the VI command:Add this line at the

MySQL Beginner note Seven: Use regular expressions in MySQL! (Video serial number: primary _44)

Knowledge Point nine: using regular expressions in MySQL (44)(1): REGEXP ' matching method ':(2): Common matching method: Pattern character ^ Matches the starting part of the character $

MySQL ' root ' @ ' localhost ' cannot log in

My colleague said this morning that the MySQL root account was not logged in. I tried.#mysql-U root-pTip "Access denied for user ' root ' @ ' localhost ' (using Password:yes)"I was the first person who changed the root password because of the

Install MySQL database records on Mac

Download MySQL for mac:https://downloads.mysql.com/archives/community/Note: I downloaded the community version, and the MySQL version is consistent with your Mac version. Of course, if you have previously installed other MySQL versions, be sure to

Python learns Day17 python for MySQL operations and uses ORM Framework (SQLAlchemy)

Python operation on MySQL and using ORM Framework (SQLAlchemy) MySQL common operations database operations Create DATABASE Fuzjtest Deleting a database Drop DB fuzjtest Querying the database show databases

MySQL build library, build tables, complement columns

SET NAMES UTF8;DROP DATABASE IF EXISTS TMOOC; CREATE DATABASE TMOOC Charset=utf8; Use TMOOC;CREATE TABLE Stu ( Sid INT PRIMARY KEY auto_increment, Sname VARCHAR (+) UNIQUE, Score DOUBLE, Schooltime DATE);INSERT into Stu (sname,schooltime)

MySQL Foundation hardening--Create a database and insert data

Second, development preparationBefore using the lab building Linux environment for this experiment, use the following two commands to open the MySQL service and log in with root:# 打开 MySQL 服务sudo service mysql start #使用 root 用户登录,密码为空mysql -u

MySQL builds master-slave synchronization

One, 1, the experimental environment: two servers to build a master-slave service to achieve synchronization2. Experimental topology:Primary server HK63 (ip:192.168.2.104)---------from server HK64 (ip:192.168.2.105)3. Experimental ideas:(1), prepare

Use left JOIN and where statement when MySQL update

updatewe sometimes need to use the correlation table when using the statement left join , and here are the correct actions:Effect to update the field of the order id finish_at freports table with fields of the specified table as the data of the

JMS Learning Eight (ACTIVEMQ messages persisted to MySQL database)

1. Place the jar file connected to the MySQL database in the activemq Lib directory2, modify the ACTIVEMQ conf directory active.xml file, modify the way data persisted2.1 How to modify the persisted data of the original KSHADB -- 2

Shell Operation MySQL

#!/bin/bash#mysql. ShMysql= ' Mysql-uroot-ptogest 'Sql= ' show databases;use togest_sy_department;show tables; '$mysql-E "$sql"Mysql-uroot-ptogest--tee= "Mysql.log"Shell Operation MySQLIn shell development, many times we need to operate MySQL

MySQL First day

DatabaseAdditions and deletions to the crudE-r model Entry (entity), relationship (relationship) Relationship describes the corresponding rules between two entities Three paradigmsDesign database specification, called paradigm

04-27 Mysql Exam 55 minutes simple answer record

Second question table#新建学生表drop table if exists setudent;CREATE TABLE Setudent (Sno Int (TEN) NOT null primary key comment ' study number ',sname varchar (a) NOT null comment ' name ',ssex varchar (TEN) NOT null comment ' sex ');#给学生表添加数据INSERT INTO

MySQL Backup and restore

MySQL backup and restore one, data backup 1. How to Back up1) Full backup: Full backup of the database2) Incremental backup: Files changed since the last backup3) Differential Backup: The file that was modified after the last completeRecommendation:

(16) MySQL cluster Galera implementation

(1) Environment introduction(2) The following configuration three servers are the same Shutting down firewalls and SELinuxsystemctl disable firewalld systemctl stop firewalldsed -ri ‘/SELINUX=/cSELINUX=disabled‘ /etc/selinux/configsetenforce 0

MySQL turns a comma-delimited number string out of a number

The database Class thinkphp command that is based on the mysqli package appears phpparseerror: Excuse me, where is the Phpsocket video tutorial?About hiding indexphp error question who has seen this template or is building this platform to provide

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