MySQL

The implementation of the Web site article on the previous and the next one of the SQL statement writing. The ID of the current article is $article _id, and the ID of the current article corresponds to the $cat_id, so the previous article should be:

The web business needs to be sorted by actual amount of money, with three fields: price (commodity prices), pay (actual paid price), Num (quantity purchased). If the product has a discount is based on pay prices, that is, pay>0, if there is no

Today I will copy the database data to Linux run the program "MySQL in the table is read only" The problem, the query information. Linux execute the following command #mysqladmin-U root-p flush-tables And there's the directory permissions problem.

Master MySQL Settings 1, edit the main MySQL server MySQL configuration file my.cnf, under [mysqld] Add the following parameters: Log-bin=mysql-bin//open MySQL binary log Server-id=1//server ID cannot be duplicated BINLOG-DO-DB=DZX2//need to

Originally do not want to tell you, because the collection of other people's website is not a glorious thing, but feel that this technique is strong enough, if this short line of code, I am not exhausted. Is this, collected some other people's

Case one: Shell+cron realize MySQL automatic backup and automatically delete n days before backup The code is as follows Copy Code #!/bin/shDump=/usr/local/mysql/bin/mysqldumpout_dir=/home/ldl/xxx/backup/Linux_user=ldlDb_

The processing method has two 1, (How to resolve the client and server-side connection (MySQL): xxx.xxx.xxx.xxx is isn't allowed to connect to this MySQL serv) Authorization Act. For example, you want to myuser use MyPassword to connect to a MySQL

But the data volume to 100,000, million to tens of millions, his performance can be so high? A little mistake, may cause the whole system rewrite, even more this system can not operate properly! Well, not so much nonsense. Use the facts to speak and

Today, using MySQL Workbench to connect to MySQL on VMware, has been unable to connect, after consulting the relevant information on the Internet, collected a number of solutions:1, Authorization law: MySQL root user by default only in the local

Login MySQL: Mysql-h localhost-u root-ptest Password must have no space before you re-enter the password Mysql-h110.110.110.110-u Root-p 123; (Note: There is no space between you and root, and so are the others.) MySQL Commands collection

As the saying goes, the river can not get wet shoes, MySQL used more will also appear a lot of inexplicable problemsCan ' t open file: ' xxx. Myi ' (errno:145), this error is generally your database table file damage caused by the cause is probably

Directly in command mode Date Format Function Date_format ()   code is as follows copy code mysql> Select Date_format (now (), '%Y '); +-------------------------+ | date_format (Now (), '%Y ') |  +-----------------

The easiest way to do it The code is as follows Copy Code Select To_days (str_to_date (' 12/1/2001 12:00:00 AM ', '%m/%d/%y '))-To_days (Str_to_date (' 11/28/2001 12:00:00 AM ', '%m/%d/%y ')) as a from table1

DayOfWeek (date)Return date is the day of the week (1= Sunday, 2 = Monday,...... 7= Saturday, ODBC Standard)Mysql> Select DayOfWeek (' 1998-02-03 ');-> 3Weekday (date)Return date is the day of the week (0= Monday, 1 = Tuesday,...... 6= Sunday).Mysql>

The following statement appears: The ' InnoDB ' feature is disabled; You are need MySQL built with ' InnoDB ' to have it working; is the MySQL tutorial configuration file banned this option!To close the MySQL database tutorialLocate the My.ini file

The typical page-level representative engine is BDB.The typical representative engine for the table level is myisam,memory and ISAM, a long time ago.The typical line-level representative engine is InnoDB. Many operations are read tables.Read and

Forget MySQL Tutorial password processing method (Linux,windows)Here is a description of the MySQL password processing method, mainly in the different operating systems such as Linux and Windows to retrieve the password method #/etc/init.d/mysql

C # connecting to the MySQL Tutorial database Tutorial Method Example Program code: using Mysqldrivercs;//establishing a database connection Mysqlconnection Dbconn; Dbconn = new Mysqlconnection (new mysqlconnectionstring ("localhost",

Mysql-apt-config is configured when sudo apt-get update is executed, as shown in the figure below.  After clicking the tab key, there is no response. If it is forcibly disabled, the dpkg manager will display sudo dpkg-configure-a to solve the

This article uses Ubuntu as an example to explain how to install the LAMP architecture of Linux, Apache, Mysql, and PHP in Linux. It can be used in Ubuntu and CentOS series.1. To install Apache, Mysql, and PHP, you must create an administrator