MySQL

Install MySQLInstalling MySQL and Php-mysqlConfigure MySQL[[Email protected] ~] #vim/etc/my.cnf Edit the MySQL configuration file [mysqld]datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sock# Default to using old password format for compatibility

Index optimization, query optimization, query caching, Server Setup optimization, operating system and hardware optimization, application-level optimization (Web server, caching) and more. The optimization techniques recorded here are more suitable

mysql+php Configuring Windows System IIS Edition1. DownloadMysql:http://dev.mysql.com/downloads/mysql/5.1.html->windows (x86, 32-bit), MSI Installer essentials-recommended (Documents not included)No Thanks, just start my download. (No need to sign

Operating system cluster size is generally 4K, and InnoDB page size is generally 16K, then it is possible that 16K pages are not stored in a continuous cluster, so that the scanning software will not scan out such a page. To solve this problem, we

http://mysql.taobao.org/monthly/2016/02/09/OverviewMySQL Original thread scheduling method has one thread per connection (one-thread-per-connection) and all connections to one thread (no-threads).No-threads generally used for debugging, production

I, timestamp[(M)]Time stamp. The range is ' 1970-01-01 00:00:00 ' to 2037 years.The timestamp column records the date and time when it is used for an INSERT or update operation.If you do not assign a value, the first timestamp column in the table is

--select * from Products--select prod_name from Products/*limit 7 offset 2 */--take 7 rows of data from the second row, if less than 7 rows, then take the actual number of rows--limit 2,7--equivalentHand shake to turn over the village board, scared

Discusses the MySQL select index when single-column and multicolumn indexes are used, as well as the leftmost prefix principle for multi-column indexes.1. Single-Column indexingIn the performance optimization process, choosing which columns to

MySQL includes support for triggers. A trigger is a database object associated with a table operation that invokes the execution of a trigger on a table when a specified event occurs on the table on which the trigger is located.Create a TriggerIn

Summary of MySQL Basics primerabout the database:database is a software developer to master the basic tools, the process of software operation is the process of manipulating data, the data in the database is nothing more than a few operations:

MySQL 5.7 Added Sys.session table to view system running statusBefore MySQL 5.6, we looked at all the processes that were running on the system through the show Processlist\g command. Starting with 5.7, we can also view all the processes that the

one, connect to MySQL:$DBC = Mysqli_connect (host,user,password,databasename);Equivalent to:$DBC = Mysqli_connect (HOST,USER,PWD);mysqli_select_db ($DBC, db_name);If an error occurs, you can call: Mysqli_connect_error ()Returns an error message with

How SQL Sever stored procedures are converted to MySQLOverall, SQL Sever and MySQL stored procedures are the same idea, but there is a great difference in syntax and structure.1. Write the stored procedure in MySQL all the dbo is removed.2. In SQL

One, MySQL use:MySQL tool is the official MySQL connection tool, the user can connect to the MYSQLD via MySQL a series of SQL operations. There are two modes of the MySQL tool: interactive mode and command line mode. The interactive mode directive

Method: After installing MySQL in Linux the default is no password, but for security, we need to set the password, sometimes you can set the password forgotten, then how to do? Then you have to go. Modify a configuration file, it path in /etc/my.cnf,

Today, database operations are increasingly becoming a performance bottleneck for the entire application, which is especially noticeable for web applications. It's not just about the performance of the database that DBAs need to worry about, it's

Http://www.cnblogs.com/soplayer/archive/2007/06/26/796565.htmlThis article mainly describes the Java connection MySQL database (take MySQL as an example) of the actual operation steps, we are related to the case of the Java connection to the MySQL

Brief introduction:How do I use Zabbix to monitor Mysql status?Zabbix has its own template for monitoring Mysql, but it cannot be used directly. We need to write our own script to get the data according to the Key provided by the template1. See what

When inserting data into a table, we often encounter situations such as: 1, first to determine whether the data exists, 2, if it does not exist, then insert; 3, if present, update. This can be handled in SQL Server:If not exists (select 1 from t

MySQL database under attack tampering (using backup and binlog for data recovery), mysqlbinlog This article mainly describes how MySQL is attacked and tampered with data, and uses slave database backup and binlog of the master database for