MySQL

Connecting to a database Here is the simplest PHP connection to the MySQL database code: The code is as follows Copy Code $link =mysql_connect ("localhost", "root", "password");if (! $link) echo "Connect error";else

The code is as follows Copy Code Require ' class/db.php ';$fileName = "A1.jpg";$fp = fopen ($fileName, "R");$img = Fread ($fp, FileSize ($fileName));Fclose ($FP);$db->execute ("Insert db2.testimg (' img ') VALUES (' $img ');");

Configuring the Environment VMware: (Version 10.0.01) Operating system: Windows Server 2008 R2 Enterprise VM1:192.168.220.103 Management node (MGM), Data node (NDBD1), SQL node (SQL1) VM2:192.168.220.104 Data Node (NDBD2), SQL node (SQL2) MySQL

One, indexing base usage 1. Create an index You can create an index when you execute a CREATE TABLE statement, or you can add an index to a table by using either CREATE INDEX or ALTER TABLE alone. 1>alter TABLE ALTER table is used to create a

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Method One, modify directly in command mode 1, Myisamchk To fix the MySQL database, there is also a command: Mysqlcheck Mysqlcheck-a-c-o-r–all-databases-uroot-p//This command is the best way to optimize all DB databases. The meaning of the

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1. Delete from T1 where condition 2, delete t1 from T1 where condition 3, delete t1 from T1,t2 where condition 4, delete t1,t2 from t1,t2 where condition The first 3 are feasible, and the 4th is not. That is, simply use the DELETE statement to

Mysqldump tools, basic usage is: Shell> mysqldump [OPTIONS] database [tables] If you do not give any tables, the entire database will be exported.By executing mysqldump--help, you can get the options table supported by your mysqldump version.Note

Find out what binary log files are currently The code is as follows Copy Code Mysql> show binary logs;+------------------+-----------+| Log_name | File_size |+------------------+-----------+|   mysql-bin.000001 | 1357315

The method is as follows: 1. Modify the C:appservmysqlmy.ini file, find the Skip-innodb, add the # in front, and save the file.2. In operation input: services.msc, restart the MySQL service.3. In phpMyAdmin, mysql->show engines; (or perform

If you are using a MySQL version of 5.0 or more, you can get it by querying the tables in the INFORMATION_SCHEMA library, which uses table_rows to record the number of rows in the table. For example, to view the number of records for all tables in

Specific methods The code is as follows Copy Code #!/bin/bash#Shell Command for Backup MySQL Database everyday automatically by Crontab#Author: Carlos Wong#Date: 2010-08-24 #配置参数   code is as

Install homebrew Homebrew is a very useful Package manager under the Mac, and automatically installs the dependent packages to free you from the cumbersome software dependency installation.Installing homebrew is also very simple, just enter in the

Question: I created a table to hold the customer information, and I know that you can insert the information into the table with the INSERT statement, but how do you guarantee that you don't insert duplicate records? Answer: You can prevent the

MySQL Tutorial two server database tutorial implement synchronous Data backup method 1. Server StatusServer a:192.168.1.1Server b:192.168.1.2 2. Create a synchronization userHost Domain a:192.168.1.2 username a:sync_a password a:aaaHost Domain b:19

Wamp installed, the MySQL tutorial password is empty, then how to modify it? In fact, it is very simple, through a few instructions on the line, I have to operate the next step. First, open the MySQL console via Wamp. Prompt for password,

1, first detect whether the system with the original version of the MySQL installation package, if there is to uninstall first delete, otherwise can not be successfully installed and started; # rpm-qa|grep MySQL to see what packages are installed,

Rsyslog Introduction: The Rsyslog service is specifically responsible for recording system log information on CentOS (earlier versions of the system use Syslog,rsyslog as the next generation of syslog), and Rsyslog consists of three parts: