MySQL

Under Linux, the default data document storage directory for MySQL is/var/lib/mysql. The following steps are required to move the MySQL directory to/data:1. Kill the MySQL process and replace the password yourselfmysqladmin-uroot-p123 shutdown2.

CIn MySQL, how to change the column declaration.Modify table-Modify column namesUse change column to modify the names of columns, and you must also set the data type of the columnsMysql> desc Test_tab//+-------+-------------+------+-----+---------+--

1. Sudo apt-get install mysql-server, input Administrator password, ' 123 '2. Enter MySQL promot command line, ' mysql-u root-p ', input password3. Create DATABASE "CREATE database xoops;"4. Allow root remote login: From all hosts: Grant all

MySQLdb is the package used in Python to manipulate the MYSQL DatabaseAddress:http://sourceforge.net/projects/mysql-python/MySQLdbinstallationUnder Windows is the EXE version of the one-click Installation . linux requires manual installation,

First, install the third-party module: MYSQLDB1, Address: http://sourceforge.net/projects/mysql-python/New Available Address: https://pypi.python.org/pypi/MySQL-python/1.2.4　 　　　　2. InstallationPre-Installation: (Site-packages directory)　　　After

First, install the Apache2#yum-y Install httpdInstallation configuration complete, start httpd service#service httpd StartSecond, install MySQL1. Install MySQL#yum-y Install Mysql-serverWhen the installation is complete, start the MySQL

Do homework today even a day of MySQL.Finally, I learned from a bitter experience, decided to start from 0 to learn JSP, the province is facing no situation.Busy all night, finally the database connected, but, good sad ah, I even a database are so

Today, nothing to do, take to x-scan-v3.3 to scan their servers, open ports have 22,80,443,3306;3306 port is swept out, hehe, that can be amazing;One, shielded scanner sweep out 3306 port, because the Web and the database is on the same server,

Recently began to learn MySQL, mainly through books, and see Yan 18 teacher's video, and then through the blog to record their learning process.Log in to DatabaseView all current databasesMysql> show databases, #查看当前所有数据库 +--------------------+|

1. Unzip the downloaded MySQL archive into a custom directory (D:\Program Files (x86) \mysql-5.6.16-winx64). 2. registering MySQL as a Windows system serviceThe operation is as follows:1) Create a new My.ini file and put the My.ini file under

The problem solved:Installing MySQL server and MySQL client 5.5Create a new remote accountRemote access PermissionsMySQL default character set modified to UTF8Check the firewallFirst, installationBTW: You can use the Find command to view the

"English" Ben Forta 1 1.0 Select Database use eg:use database name; 2.0 Show Command View information: show databases; Show tables; Show columns from table name; (Displays property information for columns in the table) Show status (displays

Mysql-cluster Environment Configuration Hardware environment4 Sets of machines192.168.1.10 Management Node192.168.1.11 Storage Node SQL node192.168.1.12 storage nodes, SQL nodes192.168.1.13 SQL nodeSoftware Environment:Operating system: CentOS 6.5 (6

When the MySQL database executes the SQL statement in the program, or when the SQL is executed, the database table may have some special characters, such as #,.You may encounter a problem such as the following table name, backup_2014.2.22, this

Recently I used a very simple and easy-to-use method to solve the insert throughput problem in the business. Here I will summarize it.   First, let's clarify that the insert throughput is not the IPS (insert per second), but the RPS (effect rows per

FristPinyin: This function is used to convert the first Chinese character of a Chinese string into a pinyin letter (for example, "Chinese"-> Z)Copy codeThe Code is as follows:Create function 'fristpinin' (P_NAME VARCHAR (255) RETURNS varchar (255)

The statements that affect the query speed in mysql are very slow. These slow statements may be written improperly or the Combined Query of multiple tables in big data, therefore, we need to find these statements, analyze the causes, and optimize

Cmake Introduction: One of the important features of cmake is its out-of-source compilation function, that is, the compilation can be performed in another specified directory rather than the source Directory, which ensures that the source directory

Reference: http://imysql.cn/2008_07_10_innodb_tx_isolation_and_lock_mode This article is only for "SELECT... lock in share mode "and" SELECT... for the test of lock and RR isolation level in the FORUPDATE transaction, the trigger lock type is

During the development process, we often store the time in milliseconds to the database, but the corresponding time seems very inconvenient. We can use some functions to convert the time to the date format.1. in MySQL, there is a built-in function