MySQL

DROP DATABASE mysql_shiyan;。CD /home/shiyanlou/desktopGit clone https://github.com/shiyanlou/SQL4 #打开 MySQL Servicesudo service MySQL startDescription: The sudo command is used to execute commands in other identities, and the default identity is

To install the related package:cd/home/oldboy/tools/Rz-yTar XF cmake-2.8.8.tar.gzCD cmaake-2.8.8./configureGmakeGmake InstallCd..Dependent Packages:Yum Install Ncurses-devel-yStart installing MySQLCreate users and GroupsGroupadd MySQLUseradd mysql-s/

Database manipulation language DML; database query Language DQL; Database schema definition language DDL; Database control Language DCL; DDL database schema definition language View all the user's database, show databases; the command to delete the

Database Lock: The reason for database locks is to handle concurrency problems.Concurrency control generally employs three methods, namely optimistic lock and pessimistic lock, and time stamp.Optimistic lock that when a user reads data, others will

Long time no blog, this period in the study of an open source project, inside the use of MySQL, long no use of MySQL. In the use of the process encountered a problem, remote login. Error message It is obvious that the connection failed. The solution

Recently learned about the use of MySQL data implementation of the principle of the active structure, in the previous concurrent access to a low scene, generally a high performance of the server as a MySQL data, can meet the business of add and

[[Email protected] ~] #cd/opt/source/[[Email protected] ~] #tar-zxf mysql-5.6.37-linux-glibc2.12-x86_64.tar.gz[[Email protected] ~] #ln-S/OPT/SOURCE/MYSQL-5.6.37-LINUX-GLIBC2.12-X86_64/USR/LOCAL/MHA[[Email protected] ~]

MySQL Basic introductionMySQL is a relational database management system.1, MySQL is an open source free database products.2. mysql support for PHP is the best (wamp or lamp)The operation instructions used in MySQL are SQL instructions.Start and

1. Creating User: Create user ' username ' @ ' host ' [identified by ' Password '];You can also insert data into mysql.user with insert SQL.User permissions created with create user are small and cannot create databases, tables, and so on.2, modify

1, first open 3306, allow any IP connectionIn/etc/mysql/mariable.conf.d/Vim 50-SERVER.CNFThis location is not the same as the location of the online blog.In the my.cnf file The last one contains a folder, go to the folder to find yourself (personal

Before you know the Binlog log three modes, first understand the Binlog log to resolve the command workers Mysqlbinlog. The role of the Mysqlbinlog tool is to parse the MySQL binary binlog log content and parse the binary log into SQL statements

MARIADB is a branch of MySQL source code, and as Oracle buys Sun,mysql it falls into the hands of a relational database. After realizing what Oracle would do with the MySQL license (MySQL was acquired by Sun and Oracle), Michael, the father of MySQL,

Hierarchical relationship of database to server and clientAbout the databaseHow you need to store data in your program:1 variables (list, tuple, collection, dictionary, nested)2 external memory (file) (*.ini)3 tables, Excel (*.xls, *.xlsx, *.csv)4

In MySQL 5, transaction support is started. It must be performed with mysqli in use. There is a certain mode. The following is a summary: // Instantiate the MySQL class $ Mysqldb = new mysqli ("localhost", "root", "XXX", "XXX "); // Start by

Even in Win2000, MySQL 4 databases are always worried about upgrading to 4. 1. If there is a problem, phpMyAdmin 2 is used. 7. Export and import the dataMySQL 4. 1, Chinese characters are garbled, so I had to put MySQL 4.1. Change the INI encoding

Write a test program when using C in Linux to operate MySQL database Int main (void) { MySQL m_mysql; mysql_init (& m_mysql ); const char plocalhost [] = "localhost"; const char puser [] = "root "; const char ppass [] = "123456"; const char

MySQL automatic backup: Home page, you need to create a backup storage directory. For example, D: \ data \ db_bak \ database folder (the same name as the database is recommended for identification) Find the folder where the database file is located.

Unique query for a single table: distinct Unique query for multiple tables: group When distinct queries multiple tables, left join is still valid and full join is invalid, When using MySQL, you sometimes need to query records with unique fields.

First install the following software package on Ubuntu/Debian: mysql-client-5.0 mysql-server-5.0Install the following software packages on Redhat: mysql-3.23.54a-11.i386.rpmMysql-server-3.23.54a-11.i386.rpmAnd mysql-devel-3.23.54a-11.i386.rmp (can

The actual operations in windows are as follows: 1. Disable running MySQL. 2. Open the DOS window and go to the MySQL \ bin directory. 3. Enter mysqld -- skip-grant-tables and press Enter. If no prompt is displayed, it is correct. 4. Open another