MySQL

1. Install MySQL server sideCommand: sudo apt-get install Mysql-serverPrompt to set root password2. Log in to MySQLCommand: sudo mysql-u root-p-U on behalf of user name;-p for password3. Using MySQL1) Presentation DatabaseCommand: show databases;2)

This is a test case that was written a long time ago, to check the number of data inserted into the MySQL database, and to see how the database is performing? Whether the server will be fully written soon.Pre-preparatory work: Mysql database setup,

The MySQL claim statement is summarized as follows:A UDF right to mentionThis kind of right-of-way I think you already know, I roughly write, the specific statement is as follows:Create function Cmdshell returns string Soname ' Udf.dll 'Select

Character set and proofing rules1. Character set: A set of symbols and character encodings.2. Proofing Rules: A set of rules that are used to compare characters within a character set. 3, the installation of the database is best with our fixed code.4

Recently found PIP3 install Python-mysql when configparse not installed, because in 3 inside changed to Configparse, so refer to the practice on the Internet, and recorded my environment is: opensuse13.2 mariadbpython3.4 and python2.7 Coexistence,

When we want to use Sql_no_cache to suppress the results cache, we find that the results are not the same as our expectations, and the result of query execution is still the result of the cache. In fact, the real function of Sql_no_cache is to

MySQL field constraint Null,not null,default,auto_increment "comes from" no rules, inadequate surrounding area, everything is so. In MySQL, each field definition contains additional constraints or modifiers that can be used to increase the

/private/etc/apache2/httpd.conf First, start Apachesudo apachectl startsudo apachectl-v can view version information for ApacheWhen you enter http://localhost in the browser, the IT works! appears The pagesudo apachectl restart restart ApacheSecond,

master:192.168.1.207slave:192.168.1.208msyql-proxy:192.168.1.206Construction of Master-slave environment: temporaryMysql-proxy Construction:First, install Luawget http://www.lua.org/ftp/lua-5.1.4.tar.gzTar zxvf lua-5.1.4.tar.gzCD lua-5.1.4#vim

1 JDBC BasicsQ1 What is JDBC technologyJava database Connectivity:java solutions for accessing databasesQ2 how JDBC implements access to the databaseJDBC defines a standard set of common interfaces that are implemented by the database vendor to

Sometimes you need to index a long character column, which makes the index larger and slower. One strategy is to emulate a hash index. But sometimes it's not good enough, then?You can usually index the beginning of several characters, rather than

The cursor of the Python cache result set can be used to improve performance.Example:#!conding:utf-8 fromMysql.connectorImportErrorCodeImportMYSQL.CONNECTORCNX=Nonecursor=NoneTry: CNX= Mysql.connector.connect (host='192.168.1.201',

First, the new userCREATE USER ' username ' @ ' host ' identified by ' password ';Second, editing permissionsGRANT all on * * to ' username '. ' Host ' idendified by ' password ';#刷新权限Flush privileges;Third, remote access1. Edit the MySQL

1. View all library sizes under the DB instance, and the result is in megabytesMysql> Select Table_schema,sum (data_length)/1024/1024 as Data_length,sum (index_length)/1024/1024 as Index_length, SUM (data_length+index_length)/1024/1024 as sum from

Yesterday the power outage, this morning after the discovery of web anomalies, up to open Nginx, PHP-FPM, MySQL, etc., found that the request found abnormal ~Nginx error log prompt*82 FastCGI sent in stderr: ' Primary script unknown ' while reading

Operating system: WIN10 x64Server version:5.5.46 MySQL Community Server (GPL)MySQL Modify character_set_database encoding formatDefault encoding: Character_set_database=latin1Connect to Servercmd> mysql-h localhost-u Root-p Press ENTERPress the

When you open navicat for MySQL on Win7, you are prompted with an error when connecting to localhost:The solution is:Open the My.ini file under C:/Program files/mysql/mysql Server 5.5 to see if it exists in the segment of [mysqld]: Skip-grant-tables.

DBRD can achieve data synchronization, DRBD is generally a master from, all read and write operations, Mount can only be performed on the master node. DRBD Master node can be swapped.The Corosync+pacemaker implementation of the DRBD master-slave

Environment:centos6.4mysql5.1Master: MYSQL1From: MYSQL2On the MYSQL1:1.1. Lock the table first to avoid new data writes during the time of the reset synchronization.Flush tables with read lock;1.2. Backing Up the databaseMysqldump-u root-p data1 >

Foreword: At present the problem solves, but still do not know what reason causes, before the problem that installs Uwsgi, MySQL appears this question, which hero says this is how to return a matter?Text: Mysql Error 2002 bug solved under LinuxCheck