MySQL

1 require and include functionsAlmost the sameThe only difference: the Require () function gives a fatal error, and the include () only gives a warning.Mutant require_once and include_once?Prevent errors from introducing the same library two times.

The recent use of MySQL database has encountered several types of numbers, mainly int,bigint,smallint and tinyint. One of the more confusing is the difference between int and smallint. Today on the Internet to find out carefully, find the following

Turn from: http://www.cnblogs.com/zemliu/archive/2012/06/17/2552301.html There are four levels of database isolation, as described in the "high Performance MySQL" book:Then talk about how to modify the transaction isolation level:1. Global

A transaction is a set of atomic SQL query statements that can also be viewed as a unit of work. If the database engine succeeds in applying all of the query statements to the database, it executes all queries, and if any of the query statements

Originally wanted to write down the javaweb MVC (tomcat, spring, MySQL) build, yesterday to 3 o'clock in the morning, who knows JdbcTemplate jar package does not make, want to die of heart have, Think about it or take a break, so review the basic

This article introduces the use of the Group_concat function in MySQL, such as select Group_concat (name). The complete syntax for the GROUP_CONCAT function in MySQL is as follows: Group_concat ([DISTINCT] The field to connect [order by Asc/desc

[Email protected] mysql-5.5.11]# CMake.The following error message appears:--Could not find Curses (missing:curses_library curses_include_path)CMake Error at cmake/readline.cmake:82 (MESSAGE):Curses Library not found. Please install the appropriate

MySQL set up a fault resolution for self-booting in UbuntuChszs, reprint need to indicate. Blog home:Http://blog.csdn.net/chszsIn resolving MySQL self-booting, execute the command:# chkconfig--listthe Program ' Chkconfig ' was currently not

1. Database fields:DEFAULT NULL ' Date of first license card ',2. Exception informationorg.springframework.dao.TransientDataAccessResourceException: # # # Error querying database. Cause:java.sql.SQLException:Value' 0000-00-00 'can not be represented

Directory1. mysql Data structure2. mysql Common function3. mysql Operation flow4. ExampleMySQL is an open source code of small relational database management system, small size, fast, low overall cost, open source. MySQL has the following features:(1

Overview of Ideas1. Download the required installation package(Linux under the wget download, the author downloaded under window, with xshell command RZ upload to Linux)2. Install MySQL3. Create a new user and authorizeIllustrated tutorialsFirst

#!/bin/bash#zabbix one-click Install # Database user name dbuser= ' root ' #数据库用户密码DBPASS = ' root ' #本地地址DBHOST = ' localhost ' #zabbix download version zbx_ver= ' 2.4.3 ' # # #检查返回值 function Checkreturn {if [$1-ne 0]; then echo "Fail: $" echo "$"

Prepare the article:1, configure the firewall, open 80 ports, 3306 portsVi/etc/sysconfig/iptables-A input-m state--state new-m tcp-p TCP--dport 80-j ACCEPT #允许80端口通过防火墙-A input-m state--state new-m tcp-p TCP--dport 3306-j ACCEPT #允许3306端口通过防火墙Note:

Tag:mysql    monitor    status   result    [[email protected] scripts]# cat checkmysqlperformance.sh #!/bin/sh  #Create  by sfzhang 2014.02.20 mysql_sock= "/data/mysql/3306/mysql.sock"  MYSQL_PWD= ' cat / Data/mysql/3306/.mysqlpassword '  ARGS=1 if 

OverviewIn MySQL, specific exceptions require specific processing. These exceptions can be linked to errors, as well as general process control in subroutines. 定义异常is to define in advance the problems encountered during the execution of a program,

Environment: Pre-pass1. Error: Missing/curses/temrcap for termcap functions Library ... configure:error:No curses/termcap Library found2. Solution:2.1. View all installed and installable packages related to Ncurses[email protected] updates]# Yum

CentOS compilation error when installing Mysql,./coonfigure: for termcap functions Library ... configure:error:No curses/termcap Library foundWorkaround: Install1. Download website: ftp://invisible-island.net/ncurses/# TAR-ZVXF ncurses-5.7. tar.gz #.

1016 Error: File cannot be opened, use background repair or use phpMyAdmin to repair.1044 Error: Insufficient database user rights, please contact the space provider to resolve1045 Error: Database server/database user name/database name/Database

MySQL set remote account login Summary1. ERROR 2003 (HY00 12. ERROR 1045 (28000): Access denied for user ' test ' @ ' x.x.x.x ' (using Password:no) 13. Retrieve the root password and set up Telnet 24. Rror 1062 (23000): Duplicate entry '%-root ' for

[Mysql] Mysql installation, deployment, and graphics Mysql is a tool that must learn how to install and deploy. It is different from other silly applications/programs, it is difficult for beginners to install Mysql in Windows for the first