MySQL

This foot is an upgrade to the script written in the morning (previous address http://www.sql8.net/a/course/shujuku/Mysql/2014/0815/30340.html)For colleagues multiple databases and data accounts, passwords, the host may not be the same situation

Tracking SQL under SQL Server uses Profiler, and how do you track sql under MySQL?In fact, the method is very simple, turn on the log logging function of MySQL, by viewing the trace log.To turn on MySQL logs log method:Configuration methods in the

For operations on string positions, the first position is marked as 1. ASCII(str) Returns the str ASCII code value of the leftmost character of the string. If str It is an empty string, return 0 . If

The default character set for MySQL installed is latin1, in order to change its character set to user-required (such as UTF8), it must change its relevant configuration file, because the Linux under the default installation directory of MySQL under

Create Database Menagerie;show databases;Use Menagerie;Show tables;CREATE TABLE Pet (name varchar, owner varchar), sepcies varchar, sex char (1), birth date,death date);Describe pet;INSERT into PetVALUES (' puffball ', ' Diane ', ' hamster ', ' f ',

With the help of explain, you know when to add an index to the table to use the index to find records and make the select run faster.If some problems arise due to improper use of the index, you can run analyze table to update the table's statistics,

Almost all of the configuration parameters are in the config.inc.php file. If this file does not exist, you can find config.default.php in the Libraries directory, copy it to the root directory, and rename it to config.inc.php. $cfg

Mysql> #接下来学习触发器的概念Mysql> #触发器是由事件来触发某个操作的, including insert update DELETE statementMysql> #触发器的基本形式:Mysql> #create trigger Trigger name Before|after trigger event on table name for each row execution statementMysql> #如果需要执行多条语句则使用 begin ... end

DirectoryPreface: What is JDBCI. Preparatory work (i): MySQL installation configuration and basic LearningIi. preparatory Work (ii): Download the jar package for the database and import itThird, JDBC Basic operation(1) Define the class of the record

Goal: Configure a keepalived dual-machine hot standby architecture and configure master-slave replicationPlanning:Master1 zlm177 192.168.17.177Master2 zlm188 192.168.17.188VIP 192.168.17.166Environment: Red Hat Enterprise Linux 6.4Percona Server 5.6.

Set MySQL remote connection root permissionsIn the remote connection to MySQL should have encountered, the root user can not connect to the remote MySQL, only local connection, foreign refused to connect. You need to establish a database account

Desc SELECT ActionId, UserID, CreateUser, ActionType, ActionName, Actioncomment, CreateDate, Pointsrulesid,reason, Objectid,byuserid,byusername,subjectid from Wikiuseractionlog Where createdate> ' 0001-01-01 00:00:00 ' and ActionType in (10,9,19,20)

has been just plain use of database storage data, also by Windows spoiled, a lot of commands used when not remember, so, replace Linux system! No longer use GUI to manage database! Also want to learn more about MySQL, from the Rights Management

To start using Entity Framework 6 and Visual Studio are necessary to install MySQL for Visual Studio 1.1.1 Beta and My SQL connector/net 6.8.1 BetaMySQL for Visual Studio 1.1.1 Beta can is downloaded with the following

[2] Recovery method when the database is modifiedThe database has been modified, there may be many reasons for the intrusion, and the corresponding program has a bug, and so on, not described in detail here. This will only show you how to revert to

Tagged with: MySQL like escape percent semicolon wildcardWildcard characters in the like statement for MySQL: percent, underscore, and escape% represent any number of characters in SQL code Http://blog.csdn.net/yc7369/select * from user where

The following command-line specific usage is as follows: Mysqldump-u username-p password-D is the name of the script in the database name table;1, export the database as DBNAME table structure (where the username is root, the password is DBPASSWD,

Original address:Http://www.jb51.net/article/26597.htmCentos+nginx+php+mysql detailed configuration (with illustrations), the need for friends can refer to the next. First, install MySQLAt present, the Web server has rarely run static pages, if you

16. Simple SQL Optimization for mysql partitions 2. SQL Optimization for mysql partitions 1. index classification B-Tree supports HASH. Only memory supports R-Tree myisam and supports Full-text myisam (Full-text index. only the "=" condition in the

To put it bluntly, MySQL has always been in a very useful and incomprehensible stage. I am not very familiar with some of the deeper management, so I have to strengthen it! Recently, in a system test, when a MySQL database is used, a trigger needs