MySQL

When the MySQL master-slave copy is configured, all updates to the data content must be made on the main library. So why do all the updates take place on the master server? This is because the data is copied one-way and only updated on the main

1,Https://github.com/Meituan-Dianping/SQLAdvisor/blob/master/doc/QUICK_START.mdhttp://www.ttlsa.com/mysql/meituan-sql-optimization-tool-sqladvisor/Enter the command in the MySQL client:Show variables like '%quer% ';The options for the red box

KING02 Install only MySQL 5.6 software no need to build library please refer to "MySQL 5.6 source code compilation installation Record"KING02 Install Xtrabackup, please refer to "MYSQL 5.6 Backup transcript-Percona xtrabackup"[Email protected] ~]#

1. View the database encoding formatMysql> Show variables like ' character_set_database ';2. View the encoding format of the data tableMysql> Show CREATE TABLE ;3. Specify the character set of the database when creating the databaseMysql>create

Remote cannot connect to MySQLWorkaround:1. Login data on the servermysql-uroot-hlocalhost-p3306- PEnter password:welcome to the MySQL Monitor. Commands End With; or \g.your MySQL connectionIDIs AServer Version:5.6. theMySQL Community Server (GPL)

Install Step 1. Installing the Yum WarehouseGo to https://dev.mysql.com/downloads/repo/yum/to download the Yum repository corresponding to the operating system version and install it:sudo rpm -Uvh platform-and-version-specific-package-name.rpm2.

Unable to find Mysql.sock,mysql.sock lost problem resolutionFirst, solve Var/run/mysqld no PID and sock filesMySQL Mysql.sock lost because of the cause of the loss is generally due to inconsistent configuration files, mysqld error starts,

First create a table mysql> create table total (id int auto_increment PRIMARY key,name char, stu_num int not null,teacher_num int not NULL); Query OK, 0 rows affected (0.11 sec) mysql> insert into Total (name,stu_num,teacher_num) v Alues ("Primary

The relationship between Regex and likeIn MySQL we often use regular expressions like filed '%?% '. But sometimes for regular filtering in complex scenarios, just a like looks a little bit out of hand.The essence of the Regex is ', like ' percent ' =

First, install Navicat: official website1. Download the installation package wget https://www.navicat.com.cn/download/direct-download?product=navicat_premium_cs_x64.tar.gz&location=1 2. Decompression

Main Library Recommended parametersserver_id = 1Log_bin = Mysql-binBinlog_format = rowSync_binlog = 1Binlog_cache_size = 16MMax_binlog_cache_size = 32MMax_binlog_size = 512MExpire_logs_days = 7Master_info_repository = tableRelay_log_info_repository =

GTID Replication:In MySQL 5.6.5 or more, MySQL has added a Gtid-based replication method. The GTID ensures that each transaction committed on the primary database has a unique ID in the cluster, which strengthens the consistency of the database

MySQL to turn on remote connection accessPress Ctrl+r to enter cmd commandEnter the MySQL path input mysql-u root-p passwordInput use MySQL Select the database to be usedUse "grant all privileges on * * to ' root ' @ '% ' of ' identified by '

CD Usr/local/mysql/mysql5.6/bin[[Email protected] bin]# service mysql-libs-5.1.73-8.el6_8.x86_64 startMysql-libs-5.1.73-8.el6_8.x86_64:unrecognized Service[[Email protected] bin]# service MySQL startMysql:unrecognized Service@ Reference articles and

1. Dynamic field names are required for updates due to the name of the field that is dynamically obtainedThe following methods will be used to error:Update Tb_pictures set #{title}= "2. The field name can be set

Description: This experiment is configured with Cenos6.6 and MySQL5.6.35 as an exampleFirst, compile and install MySQL1, to avoid problems during the installation process, first install the system dependency packageYum Install Apr autoconf automake

Mysql:innodb transaction lock, a thread occupies, the simple way is: execute mysql command: Show full processlist;Then find out the query statement of the system Id:kill off the locked thread Id;kill 12321;If that's not good, shoot the dog, just

Key points for mysql5.7.21 installation and key points for mysql5.7.21Download the Zip decompressed version for Windows, because it has not been installed on Windows for a long time. This installation found several different places from the previous

Install mysql in Linux (yum and source code compilation) and mysqlyum Here we will introduce two methods for installing mysql in Linux: yum installation and source code compilation and installation. 1. Install yum (1) first check whether the mysql

Mysql5.7.21 installation and configuration tutorial, Simple installation and configuration of mysql5.7.21 are as follows: 1. Install MySQL 1. Download community edition from the official website 2. Extract To drive C: \ mysql-5.7.21-winx64 3. Run