MySQL

This morning came to the company found last night also good database run up, this is C language editor I just operation backstage is confused.And the problem is mostly caused by a night burst with no symptoms, or because of MySQL reload. And the

private void Datatabletoexcel (System.Data.DataTable tmpdatatable, String strFileName){if (tmpdatatable = = null){Return}int rowNum = tmpdatatable.rows.count;//Lineint columnnum = tmpdatatable.columns.count;//columnint rowIndex = 1;//Lineint

Uninstall the previous Apache1, Control Panel first Uninstall2. Delete the Apache directory under E:\Program Files (x86) \apache Software FoundationFirst, install Apache1, custom personalized installation → Change the path to E:\Program Files (x86) \

How to configure the MySQL server, but considering the different server hardware configuration, the specific application of the difference, those articles can only be used as a preliminary setting reference, we need to configure the optimization

based on the previous article method, the batch command is added to enable automatic backup. It is only because the name of the backup file in the batch command is special in terms of time, so it's a special sort of article. 1. Copy the date folder

has been to utf8_unicode_ci and utf8_general_ci these 2 proofing set very confused, today checked the manual has a point. But what is the difference between using UTF8_UNICODE_CI and Utf8_general_ci for the Chinese character set, or unclear?The

When MySQL has multiple instances on a single server, MySQL occupies multiple different ports. Low-level discovery with Zabbix can be easily monitored.Idea Reference: http://dl528888.blog.51cto.com/2382721/1357713Below I have written a simple script

#!/bin/bash#mysql全备脚本, this script can back up multiple databases,#为每个数据建立单独的文件夹进行备份#author: Yxy#website: Www.sql8.net#mail: [Email protected]#created: 2014-8-14#Mysql dabase Information#主机db_host= "localhost"#数据库帐号Db_user= "Root"#数据库密码Db_passwd= "12

#encoding: Utf-8import mysql.connector__author__ = ' Administrator ' config={' host ': ' 127.0.0.1 ', #默认127.0.0.1 ' User ': ' Root ', ' password ': ' Root ', ' Port ': 3306, #默认即为3306 ' database ': ' Test ', '

multi_query ($sql)) {do{//takes a result set from the $mysqli link $result=$ Mysqli->store_result ();//Remove data from the result set while ($rows = $result->fetch_row ()) {foreach ($row as $key = $val) {echo "$ Key----$val ";} echo "";} Release

Use the Mysqli library to connect to MySQL, which supports both object-oriented and process-oriented approaches: 1. Object-oriented usage establish a connection $db = new mysqli (' localhost ', ' root ', ' 123456 ', ' dbname '); Select the database

Mysql Master-slave synchronous setupMySQL master-slave synchronization uses the SQL statements recorded in the binlog log to achieve data synchronization, which enables automatic data backup. building mysql master-Slave synchronization requires a

MySQL Multi-byte character set causes master-slave data inconsistency problemFrom cirrious 2013-04-27 16:03:56| Category: Default Categories | Report | Font size Subscription Reprint: http://backend.blog.163.com/blog/static/2022941262013327403

First, views viewA view is a virtual table that itself does not store any data. Only the runtime contains dynamically retrieved data.Eg:select SID, Name, sex, s_num from student, school WHERE sid = 2 and student.sid = Scholl.sid;This simple query

How to Set MySQL database name, table name Case sensitivity, mysql Database Name In MySQL, databases and tables are actually directories and files under the Data Directory. Therefore, the sensitivity of the operating system determines the case

Xin Xing makes mysql run faster. Section 1 Optimization Direction and Database Modeling I plan to write a set of bibliography recently, that is, about mysql optimization. First, I will write it on my blog and then sort it into a pdf document. Of

SQL optimization and SQL Optimization Methods To optimize queries and avoid full table scanning, you should first consider creating an index on the columns involved in where and order. Try to avoid null value determination on the field in the

PHP uses mysqli extension to connect to the MySQL database, mysqlimysql 1. Object-oriented usage $db = new mysqli('localhost', 'root', '123456', 'dbname'); If no database is specified during connection establishment, select the database to use and

MySql Summary (1) I have read MySql for the second time. The main purpose of this time is to sum up the MySql system. I used to write my notes on MySql before, but I don't want to always take it with me in the future, so I will spend some time

[Mysql] Common commands-forgot password The previous article basically summarized how to create a user using commands in myql. For details, see [Mysql] Common commands-user operations (create, authorize, modify, and delete) What should I do if I