MySQL

Linux under compile install MySQLBelow is the installation of MySQL 5.6.20 under CentOS 6.5.1. First uninstall the system's own MySQL# yum Remove MySQL2. Installing CMakeDownload CMake Source code# wget

As we all know MySQL database InnoDB engine is the default row lock, but today accidentally found my database how to become a table lock, let me very puzzled ~ ~ ~1. First look at my database engineShow variables like '%storage_engine% ';2. Create

1. Login database: mysql-uroot-p12345 (12345 for password)2. Creating the database: Create databases SENGUOCC; (SENGUOCC is the database name)3. See which databases are available: show databases;4. Using a database: use SENGUOCC;5. Show all tables

Stop all MySQL service processes firstOpen the first cmd window and go to the MySQL bin directory to execute the following command#mysqld--skip-grant-tablesNote that at this point in time (the CMD window cannot continue to be used.) We re-open a cmd

Configuration file Path/etc/my.cnfCore Configuration# The MySQL server[Mysqld]Port = 3306 Listening portsSocket = socket for/tmp/mysql.sock monitoringSkip-locking Skip LockKey_buffer_size = 256M Index block buffer sizeMax_allowed_packet = 1M Maximum

MySQL does not have a password by defaultMysql-uroot or MySQL to log in.Set PasswordMysqladmin-uroot password ' hd792310 'Login commandmysql-uroot-phd792310If the password is forgotten, the password can be initialized1.vim/etc/my.cnfAt the core

1. Recently did insert database, then always reported a mistake. MySQL server has gone away. (e.g.)Looked up a lot of information, finally solved.1. The connection timeout may be: Enter php.ini and modify the value of Wait_timeout. Some versions may

Some time ago, a rather senior programmer asked me what is called the index, I am very surprised, I think this will not be bucket, because there are thousands of developers (probably mostly using MySQL) have not received the formal training of the

Simply use the PHP API to query Sphinx index data $sphinx = new Sphinxclient ();                  $sphinx->setserver  (  ' localhost ', 9312 ); Sphinx hostname and Port        //Set return result set to PHP array format        $

Original link: http://blog.csdn.net/xiaoxu0123/article/details/62585381. Set the directory to be stored:[Email protected] etc]# MORE/ETC/MY.CNF[Mysqld]# # #此处省略N个字Log-error=/var/log/mysql/mysql_error.log #错误日志Log=/var/log/mysql/mysql.log # # #最好注释掉,

MySQL will be closed to Oracle, MARIADB is open source softwareMARIADB is not only a replacement for MySQL, but also a technology to innovate and improve MySQL.Mariadb and the founder of MySQL are the same person, Michael WideniusMARIADB and MySQL

Scenario One:A computer on the export of SQL files to another computer to recover the database, Chinese characters are all garbled, and then there may be some data hint extra long.Scenario Two:The SQL file you get is not the original export SQL file,

Open the phpMyAdmin folder under theconfig.sample.inc.phpfile，find this sentence $cfg [' Servers '] [$i] [' auth_type '] = ' config '; This can be set to HTTP (http), config, cookies, signon. Config: This is a simple way to write the password

CREATE TABLEbill( idCHAR (*) is not NULL, customerINT (255) null DEFAULT null COMMENT ' customer ', shopINT (255) null DEFAULT null COMMENT ' Consumer shop ', moneyDECIMAL (10,2) null DEFAULT null COMMENT ' cost ', typeINT (255) null DEFAULT null

1. Index typeWhen you create an index, you can specify whether the index can contain duplicate values. If not included, the index should be created as a primary KEY or a UNIQUE index. For single-column uniqueness indexes, this guarantees that a

MySQL Bulk operationsBulk operation data is a batch update of the database using the CommandBuilder and DataAdapter.Update () methodsDataAdapter: There are four important objects: Selectcommand,insertcommand,updatecommand, DeleteCommand to

MySQL server master and slave configuration, originally is a very simple thing, helpless not from scratch, always in someone else already installed MySQL server above, this will involve, MySQL version, startup files, and so on some problems.But

MySQL can actually duplicate the index on the same field, Oracle is not. Need to install Pt-query-digest.[Email protected] ~]# pt-duplicate-key-checker-h10.10.11.208-uroot-proot-p3316--CHARSET=GBK# ####################################################

File Download:apache:http://httpd.apache.org/download.cgiPhp,phpmyadmin,mysql,api Download: http://pan.baidu.com/s/1o69XDEi1. Install MySQL:MySQL is the installation file, click Setup to install, optional default or server only mode, set the

MySQL installation is simple, fast, feature-rich. It is also the benchmark for open source movement, and its great achievements show us that a successful company can be built on open source code.However, people who used MySQL had waved their fists