MySQL

PHP//The encoding of the set character is utf-8, which resolves the Chinese in the URLHeader("content-type:text/html; Charset=utf8 "); //get the variables in the browser URL$dbdatabase=$_get[dbdatabase];$tablename=$_get[TableName];//MySQL account

MySQL Data folder appears mysql-bin log file, through my.cnf comment out log, can delete it?ReferenceHttp://database.51cto.com/art/201107/278988.htmThe source and processing method of mysql-bin.000001 file are introduced in detail.In MySQL database ,

from: http://blog.chinaunix.net/uid-29532375-id-4144615.htmlindexing and Optimizing queriesAn appropriate index can speed up queries and can be divided into four types: primary key, unique index, full-text index, normal index.PRIMARY Key: Unique and

1. The machine where MySQL is located192.168.29.128 (Master)192.168.29.129 (Slave)Configure master-Slave synchronization, refer to Http://www.cnblogs.com/luxh/p/4088420.html2. Download and install AtlasHttps://github.com/Qihoo360/Atlas/releasesNote

this article starting at Slime Line the world . in the previous article, we explained how to restore the MySQL database through MySQL binlog log, the article connected to the slime: Recovering MySQL database with Binlog ". Where we mentioned the

1, transaction processing InnoDB supports transactional features, MyISAM not supported. Myisam executes faster and performs better. 2,select, UPDATE, INSERT, delete operation MyISAM: if executing a lot of select,myisam is a better choice InnoDB:

MySQL's paging is relatively simple, only the limit offset,length to get the data, but when the offset and length is large, MySQL performance decreased significantly* 1. Sub-Query optimization methodThe first data is found, then the ID of the data

Preparation tools:VS2013, MySQL for VisualStudio 1.1.4, Connector/net 6.8.3 (Baidu net disk)The Package Manager executes the command:install-PackageentityframeworkInstall-package MySql.Data.Entity.EF6Install-Package MySql.Data.Entity -Version

The way to examine the engine is to use mysqlshow, a tool that displays database information at the command line. Mysqlshow is available in the MySQL client installation package. To use mysqlshow, you need to provide the MySQL server login

[Warning] '--log_slow_queries ' is deprecated and would be removed in a future release. Please use '--slow_query_log '/'--slow_query_log_file ' instead.1. Modify the configuration

Data types for MySQLIn MySQL database, each library is composed of multiple tables, each of which consists of rows and columns.The so-called table is the process of declaring a column, the data is stored in the form of a file on the system. As a

MySQL Chinese garbled and exported as SQL statement and Excel problem solvingThese days based on Heritrix wrote a crawler, used to MySQL, import and export data, encountered some garbled problems, finally solved, record, for viewing.First, export

Objective:If your database file is large, you may need to take up a lot of server resources when backing up, so the webmaster should try to choose the minimum period of time to perform automatic backup commands, such as 4-5 o ' Day in the morning.

Use the properties file to configure the database driver, URI, user name and password, so as to make it easier to change the database later without changing the source code;driver=Com.mysql.jdbc.Driveruri=jdbc:mysql://localhost:3306/day10user=

1pstmt=conn.preparestatement (SQL);2 for(inti=0;i)3 {4 //Preparing SQL statements5Pstmt.setstring (1, "TT");6Pstmt.setstring (2, "1234567890");7Pstmt.addbatch ();//Put the SQL statement in the cache8

MySQL client tools in the/usr/local/mysql/bin directory, commonly used clients are: MySQL and mysqladminWorking mode for MySQL commands: Interactive and scriptedInteractive:Interactive mode is divided into server-side commands and client

1. Remove the space in the middle of the value of a field in MySQL dataUpdate TableNameSet column name =replace (column name, Space, ')Where column name like '% 'Update student Set Sname=replace (sname, ', ') where sname like '% 'The replacement

Recently maintained a project has a problem, the final analysis is stuck in the database connection pool, and then did some learning.First write my own method, and then the other online no success of the method.1, first of all, of course, the MySQL

--separate multiple rows of records (only one column) with the specified delimiterIF(object_id('Sp_rowschangeclosbysplit'N'P') is not NULL) DROP PROCSp_rowschangeclosbysplitGOCREATE PROCSp_rowschangeclosbysplit@table nvarchar( -),--Table

Ubuntu Mysql maintenance and tumysql MaintenanceInstall MySql Sudo apt-get install mysql-serverGo to Mysql Shell Mysql-u root-pQuery a database Show databases;Create a database Create database $ DB_NAME;Database Information Retrieval Use $