MySQL

1. Log in to the database>mysql-h localhost-u root-p Database name2. Querying all the databases>show databases;3. Select a database>use database name;4. Querying all data Sheets>show tables;5. Querying the table for field information>DESC table name;

This article to learn the specific use of Cobar configurationScene:The database name provided by the system is usercenter, and there is a table U_userPart of the data for this table is mapped to the u_user of the physical database

Today using hibernate to save data to MySQL, found garbled problem, after checking, found that the correct Chinese received, indicating that the client browser will send Chinese encoding to the server process without garbled problems, and then find

Experimental environment: centos6.6 MariaDB 10.0.102 Binary InstallationThis is no longer an indication that the installation process directly begins configuring Master-slave nodesNode 1:172.16.30.1[Email protected] ~]#

Retrieve ID = 2 or id = 5 or id = 9 or id = or id = 38.Then according to 2, 5, 9, 56, 38 in this order, this is the topic requires the following for the solution: 1. SELECT * from ' test ' WHERE ' id ' in (2,5,9,56,38) the ORDER by FIELD (' id ', 2,5

A general introduction to the basic situation:Zabbix version: Zabbix 2.2.4MSYQL version used by Zabbix: percona-xtradb msyql 5.1.56MySQL Version view method:#usr/local/webserver/mysql/bin/mysql-u root-s/home/mysql_config/run/mysqld.sock-pEnter

MySQL 5.6 RPM installation, the directory is placed by default in/var/lib/mysql, to migrate to the new directory/mysqldata,1.cp-arp/var/lib/mysql/*/mysqldata/2. Chown Mysql.mysql/mysqldata3. This is a relatively simple/etc/my.cnf,mysql 5.6 is not

C # (. net) MySQL database link tool classDownload and install Mysqldrivercs Firsthttp://sourceforge.net/projects/mysqldrivercs/found under the installation folder MySQLDriver.dll , and then the MySQLDriver.dll Adding references to the project

Userwarning:/home/toddler/.python-eggs is writable by group/others and vulnerable to attack when used with Get_resource_f Ilename. Consider a more secure location (set with. Set_extraction_path or the Python_egg_cache environment

Installation method is divided into rpm and source code compiled installation Two, this article is the use of MySQL source code compilation, the compiler uses CMake. The software requires mysql-5.5.29.tar.gz and cmake-2.8.10.2.tar.gz, please

The simplest way is to programmatically access MySQL by adding a line of code: mysql_query ("SET NAMES ' GBK '");1.PHP page language itself is not the appropriate encoding type, when you write directly in the script in Chinese is certainly garbled,

A description of the application scenarioRecently, we deployed a cloud host in Ucloud. Because of the underlying hardware failure, Ucloud recommends that the cloud host be migrated dynamically, but because the MySQL database is deployed on this

Mysql_affected_rows: Gets the number of columns affected by MySQL last operation.Mysql_close: Close the MySQL server connection.Mysql_connect: Turn on MySQL server connection.mysql_create_db: Create a new MySQL database.Mysql_data_seek: Move the

Partitioning method 1:hash PartitionExample:CREATE table Thash (x int, y int) partition by hash (x) partitions 4; That's a good word for a table. The next step is to draw a little deeper into the problem;CREATE TABLE THASH2 (ID int primary key,x int,

Linux start-up programs are generally placed in the/etc/rc.d/init.d/,/etc/init.d/is its soft connectionMySQL Set as Linux serviceCp/usr/local/mysql5/share/mysql/mysql.server/etc/init.d/mysqldChkconfig--add mysqld chkconfig--level 2345 mysqld onChown

MySQL Common Database Mode The pattern name after the combination Individual Sql_mode in the combined mode DB2 Pipes_as_concat, Ansi_quotes, Ignore_space, No_key_options, No_table_options, no_filed_options

There were a lot of people who had a headache for this thing:You can import a database script without having to install the MySQL client, but you cannot find the corresponding API call. So you need to implement your own implementation of the import

In Linux, mysql forgets the root user password.Today, when receiving a MYSQL server, I found that I forgot the password of the root user of MYSQL. I found that no root user password exists in various documents. Therefore, I need to modify the

SQL: Mysql create view, function, procedure, mysqlprocedure Create database Liber; use Liber; # data statistics 20150210 Geovin Du tu juwen show databases; drop table BookKindList; # create table BookKindList (BookKindID int not null AUTO_INCREMENT,

New Features of MySQL 5.0 database Stored Procedures When you submit a query, MySQL will analyze it to see if some optimization can be done to make it faster to process the query. This section describes how the query optimizer works. If you want to