MySQL

PremiseReference:Http://www.cnblogs.com/xiaoxiaoguixia/p/4032355.htmlDesign diagram:Divided into three parts:Zabbix-server zabbix*.tar.gz Source Package supportZabbix-web Lamp Environment SupportMySQL Zabbix MySQL database stores Zabbix's various

The calculation formula given on the net is this: Lng1 represents a point of latitude and longitude, and Lat2 Lng2 represents the B-point latitude and longitude A = Lat1–lat2 is two points of latitude difference B = lng1-lng2 is two

PHP's mysqli extension provides all the features of its antecedent version, in addition, since MySQL is already aA database server with full features, which adds some new features to PHP. And Mysqli is supporting theThese new features.A Establish

Source code compilation mysql-5.7.11:http://cdn.mysql.com//downloads/mysql-5.7/mysql-5.7.11.tar.gzhttp:// liquidtelecom.dl.sourceforge.net/project/boost/boost/1.59.0/boost_1_59_0.tar.gz installing the necessary resource bundles recommends using the

Reading is divided into two ways: one is to read a book as a textbook, one page to look, the other is to read books as a reference book, to use the relevant knowledge when to look up books. To learn the programming language, I recommend choosing an

The first step is to create the function f_dim_dayCREATE PROCEDURE F_dim_day (in Start_date VARCHAR (a), in Date_count int)Begindeclare i int;Set i=0;DELETE from Dim_day;While IINSERT into

MySQL's default encoding is Latin1, the support for Chinese characters is not good, need to edit the configuration file, set the default MySQL code.This process is a lot of online tutorials, we can refer toMySQL Modify encoding formatMySQL modify

Speaking of the Mybatics framework, Java development engineers around them are largely familiar. Mybatics is an Apache open source project, formerly known as IBATICS,2010, the project was migrated by the Apache Software Foundation to Google

Then on the previous blog, this time we initially learned about some of the constraints in MySQL database. Six auto-numbering auto_incrementFields that are automatically numbered must be combined with the primary key. By default, the starting value

#!/bin/shhost=192.168.5.30user=abccdefpw=123456msg= ' MYSQL-H$HOST-U$USER-P$PW This script is changed to a script to safely delete the MySQL two process log , MySQL master-slave synchronous database binary log is often very large, manually delete

.1, Business Each relational database is based on transactions (Transaction) as the basic unit of operations. In a relational database, transactional operations are defined as follows:A transaction (transaction) is a program execution

Environment: WIN10 64-bitMySQL version: Mysql-5.7.9-winx64.zip (http://dev.mysql.com/downloads/mysql/)First of all, 5.7.9 This version is configured differently than the previous install-free version. (The. msi installation and other versions of

Unzip and modify the configuration file Adding environment variables Register MySQL Service Start the service Change root password Unzip and modify the configuration fileUnzip the downloaded MySQL archive into a custom directory,

Modifying a data table includes adding columns, deleting columns, adding constraints, deleting constraints, modifying column definitions, and modifying data table names, and the following two when we useBe cautious and try not to use it.Here is a

From MySQL High performance third edition:We illustrate how MVCC works by InnoDB's streamlined behavior.InnoDB's MVCC is achieved by saving two hidden columns after each row of records. These two columns, one saves the creation time of the row, and

Golang Github.com/go-sql-driver/mysql encountered the database, set the library design unreasonable solution, the query reported the following this errorScan error on column index 2:unsupported Scan, storing driver. Value type The solution is to

MySql functions for determining Chinese characters, dates, and numbers, and mysql Chinese Characters Several commonMysql Functions /*************************************** **************1. Determine whether the string is returned from Chinese

MySql determines the specific functions of Chinese characters, dates, and numbers, and mysql Chinese Characters Several mysql functions are commonly used. The specific functions for MySql to judge Chinese characters, dates, and numbers are as

MySQL command line Export Database, mysql command line Export MySQL command line to export the database:1. Go to the bin folder under the MySQL Directory: directory from cd MySQL to the bin folderFor example, if the command line I entered is cd C: \

Percona-toolkit pt-kill: Method for killing mysql queries or connections, perconatoolkit Pt-kill is a simple tool to kill mysql threads and queries. It is mainly used to prevent long queries from occupying system resources for a long period of time,