First, the configuration MySQL Database1, unzip the green version of MySQL, and renamed to mysql5.7, such asCompare The previous versions of 5.6, with fewer data directories ( storage ) and My-default.ini file (configuration information)Second,
Objective:JDBC is the total interface of the Java link database;The most important thing to do before learning JDBC is to configure the database (MYSQL);The following is the configuration MySQL step;This chapter is broadly divided into downloading
1 Logging into the databaseamp1:~ # Mysql-uroot-pmysql.rzrkwelcome to the MySQL monitor. Commands End With; or \g.your MySQL connection ID is 2132Server version:5.0.95-log SUSE mysql rpmtype ' help, ' or ' \h ' for help. Type ' \c ' to clear the
The database has different storage and management methods for the same data, which is called the storage engine in MySQL.The common storage engine has myisam,innodb,memory,mysql default is InnoDB.MyISAM bulk insertion speed is faster than InnoDB,
MySQL encoding settingsMYSQL 2009-09-11 15:37 Read 73 comments 1 font size: Big middle and small mysql> SHOW VARIABLES like ' character_set_% '; +--------------------------+----------------------------+ | variable_name | Value | +----------------
Zabbix Introduction
Zabbix is an enterprise-class open source distributed monitoring solution, maintained by a foreign team to maintain updates, software can be downloaded freely, the operation team by providing fee-based technical support to
Access to the MySQL DOS command page, the method from the DOS interface into the MySQL database command line management interface, to find the installation location of MySQL and CD access, generally "... mysql\bin\"; enter "Mysql-u root-p" and then
What is a trigger?
A trigger is a database program that listens to an action on a data table, and executes the SQL statement as soon as the behavior of the datasheet occurs.
syntax structure of triggers:
Create TRIGGER Trigger Name trigger
Syntax: CREATE TABLE table name (field name 1 type [(width) constraint], field name 2 Type [(width) constraint], field name 3 Type [(width) constraint]); Note:1. In the same table, the field name cannot be the same as 2 . Width and constraints
Query mysql database encoding for UTF8: Mysql> Show create DATABASE test;Query mysql data sheet encoding for UTF8: Mysql> Show CREATE TABLE yjdb;If not UTF8: Vim/usr/share/doc/rsyslog-7.4.7/mysql-createdb.sqlModified:CREATE DATABASE syslog
Table IntroductionTable is equivalent to a file, a record in the table is equivalent to a row of the file, but a record in the table has a corresponding title, called the table fieldId,name,qq,age is called a field, the rest, a row of content is
Note :1. If you command in cmd, enter the wrong one and use \c to jump out2.\s Viewing configuration informationI. Operation folder (library)Add: Create Database db1 charset UTF8; Delete: drop database db1; change: Alter DATABASE DB1 charset GBK;
Today installed is the binary MySQL package 5.7.21 package, in the configuration file when a lot of pits, left or done, to share with youBinary msyql5.7.21 version master-slave copy installationNew/picclife DirectoryMkdir/picclifeNew/picclife/data
DownloadVisit https://dev.mysql.com/downloads/mysql/Download mysql5.6Unzip after download, see the following directoryInstall start MySQL1.添加环境变量【右键计算机】--》【属性】--》【高级系统设置】--》【高级】--》【环境变量】--》【在第二个内容框中找到 变量名为Path 的一行,双击】 --> 【将MySQL的bin目录路径追加到变值值中,用 ;
First, the configuration MySQL Database1, unzip the green version of MySQL, and renamed to mysql5.7, such asCompare The previous versions of 5.6, with fewer data directories ( storage ) and My-default.ini file (configuration information)Second,
Mysqlhttps://dev.mysql.com/downloads/mysql/1. Connect MySQLFormat: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine.First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u
First, configure the MySQL database1, unzip the green version of MySQL, and renamed to mysql5.7, such asCompare the previous version of 5.6 with less data directory (storage) and My-default.ini files (configuration information)Second, installation
MySQL database management1, the basic information viewMysql> select version ();Mysql> Select Database ();Mysql> Show variables like '%character% ';mysql> set names UTF8;Mysql> show engines;Mysql> Show create TABLE test;Mysql> Show CREATE Database
First, the code in MySQL mysql> show variables like ' collation_% '; +----------------------+-------------------+| variable_name | value |+----------------------+-------------------+| collation_ connection | latin1_swedish_ci | |
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