mysql default

Hive configuration MySQL MetastoreIn addition to saving real data in hive, there are additional data to describe the library, tables, and data, called hive metadata. Where are these metadata stored?If you do not modify the configuration hive

MySQL performance management and architecture designOne, IO, memory , Throughput UnderstandingIO refers to the number of operations between the device and the device, such as MySQL and PHP plug-in Memory is that the program is running inside the

1. Download the corresponding MySQL installation source code packageAddress: http://dev.mysql.com/downloads/mysql/5.1.html2. If you have ever installed, uninstall the unused old installed MySQLBecause there are a lot of Linux distributions, the

Role: Constraints are used to ensure data validity and integrity. Define PRIMARY KEY constraint PRIMARY KEY constraint primary key: Information record a field can uniquely differentiate other information records, this field can be primary key

MySQL installation is nothing more than the following, where Yum installation is also a RPM installation, but this does not need to download the installation package, directly according to the operating system comes with the MySQL package installed,

MySQL compile and install common parameters:Dcmake_install_prefix MySQL Installation pathDmysql_datadir Database Storage DirectoryDmysql_user the owner of MySQLDmysql_tcp_port port used by the TCP protocol (default is 3306)DMYSQL_UNIX_ADDR

Install MySQLInstalling MySQL and Php-mysqlConfigure MySQL[[Email protected] ~] #vim/etc/my.cnf Edit the MySQL configuration file [mysqld]datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sock# Default to using old password format for compatibility

MySQL is prone to garbled problems when porting data containing Chinese. Many of them appeared when transplanted from mysql4.x to mysql5.x. The default character set for MySQL is Latin1, and many people use the latin1 character set when using mysql4.

A transaction is the execution unit of a DBMS. It is made up of a limited number of database operation sequences. But not any database operation sequence can be a transaction. In general, transactions are required to meet 4 conditions

There is a link on how to re-set password.Http://database.51cto.com/art/201010/229528.htmWords in short,Lines mysql> UPDATE mysql.user SET password=password (' Your_new_password ') WHERE user= ' root '; MySQL> FLUSH privileges;And about MySQL

1. Open a Command Prompt window, where the command prompt window itself has a character set that is viewed by right-clicking on the title bar of the command Prompt window and selecting the default value - Options - The default code page allows you

Transferred from: http://www.cnblogs.com/discuss/articles/1862248.htmlRecently, in the project group used by the MySQL database, the insertion of data garbled, on this issue to make a summary, we start from the most basic point, to the root causes

Recently in the production of an installation package, need to install the time to execute the MySQL script, do a batch, but found that always execute to insert Chinese when the error, or insert Chinese is garbled.Online check a lot of information,

MySQL default data submission operation mode is autocommit mode (autocommit). This means that unless a transaction is explicitly started, each query is executed automatically as a separate transaction. We can change whether the autocommit mode is

xampp default MySQL password settings, modify the default null password for MySQLCategory: Xampp2012-09-12 11:24 30264 People read Comments (5) favorite reports Mysqlphpmyadminauthentication database management Tools Database extensionI used to

MySQL multi-instance for semi-synchronous replicationMySQL multi-instance for semi-synchronous replicationMain Library 1:192.168.40.150Main Library 2:192.168.40.161From a library (2 MySQL instances): 192.168.40.162One: Use "Show Master Status" in 192

In mysql, if you use fuzzy search, we can use like directly. Of course, many times like cannot meet our needs. We can use regular expression matching to query, in the afternoon, I will introduce it to you. The simplest method of fuzzy search In

During my time in studying Java, especially when I learned J2EE, I often encountered a Chinese Garbled text problem, which is a special headache. I believe everyone will feel the same way, as a result, we continue to summarize and find that solving

  Cause: When I used ant to deploy process definition and process-related resources to the jbpm database, I reported the following error.   Error message, probably:11:33:40, 781 error jdbcexceptionreporter: 101-you have an error in your SQL syntax;

Troubleshooting of data file creation failure in mysql innodb/etc/my. cnf configuration www.2cto.com [mysqld] datadir =/var/lib/mysqlsocket =/var/lib/mysql. sockuser = mysql # Default to using old password format for compatibility with mysql 3.x#