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Hadoop cluster (phase 11th) _ Common MySQL database commands

1, System Management 1.1 connection MySQLformat : mysql-h host address-u user name-P user PasswordExample :Example 1: Connect to MySQL on this computer.First open the DOS window, and then enter the directory Mysqlbin, and then type the command

"MySQL must know" reading notes

"MySQL Must Know" (Click to view details)1, written in front of the words this book is a MySQL classic primer book, a small one, also by many netizens recommended. Before the time of their own study is to chew the computer series of Tsinghua

Basic SQL statements

First, the library operation1. Create a databaseCommand: Create databases For example, create a database named lamp149mysql> CREATE DATABASE lamp149;2. Show all databasesCommand: Show databases (note: There is a last s)mysql> show databases;3.

MySQL command Daquan (full version)

Original: http://www.jb51.net/article/74564.htmFirst, connect the databaseFormat: mysql-h host address-u user name-P user Password1.1. Connect to MySQL on this computer.First open the DOS window, then enter the directory Mysql\bin, and then type the

Mysql Common Commands

1, System Management 1.1 connection MySQLformat : mysql-h host address-u user name-P user PasswordExample :Example 1: Connect to MySQL on this computer.First open the DOS window, and then enter the directory Mysqlbin, and then type the command

MySQL Table modification

CREATE TABLE tab2 as (SELECT * from TAB1)The storage engine for this practice table also uses the server's default storage engine instead of the source table's storage engine, which copies the contents of the table together.CREATE talbe tab2

MySQL must know the notes

"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 Common commands

MySQL installation directory database directory/var/lib/mysql/configuration file/usr/share/MySQL (mysql.server command and configuration file) related commands/usr/bin (mysqladmin mysqldump, etc command) startup script/etc/init.d/MySQL (startup

MySQL Show command collection

A.ShowTables orShowTables from database_name; --Displays the names of all tables in the current databaseB.ShowDatabases --DisplayMySQLIn all name of the database C.  show  columns from table_name from database_name; or Show  columns from

MySQL must know reading notes (1)--Basics

Database BasicsBasic concepts: database: A container that holds organized data (typically a file or a set of files).Database software should be called a DBMS(Database management System). A database is a container created and manipulated through a

Mysql Common Commands Summary

MySQL installation directoryDatabase directory/var/lib/mysql/Configuration file/usr/share/mysql (mysql.server command and configuration file)Related commands/usr/bin (Mysqladmin mysqldump and other commands)Startup scripts/etc/init.d/mysql (startup

MySQL table structure modification detailed

From:http://www.cnblogs.com/qintangtao/archive/2012/11/17/2775209.htmlModify the syntax of a table=========================add column [Add column name]=========================①alter table name Add column list Type column parameter "Add column to

Use MySQL full record under Cmd&linux

PHP MySQL database common cmd command setshow databases; Display DatabaseCreate database name; Create a databaseUse DatabaseName; Select DatabaseDrop database name deletes databases directly and does not alertShow tables; Show TableDescribe

MySQL tutorial: MySQL show command

Show tables or show tables from database_name; Explanation: Displays the names of all tables in the current database Show Databases Explanation: Displays the names of all databases in MySQL shows processlist; Explanation: Displays all

10 Save time Mysql Command Summary _mysql

Although there are many GUI based MySQL clients that exist, such as the famous phpMyAdmin and SQLyog, but I have always liked native MySQL command-line clients, it is true that we need to take some time to familiarize ourselves with these

Mysql Command Encyclopedia (full version) _mysql

One, the connection databaseFormat: mysql-h host address-u user name-P user Password 1.1. Connect to MySQL on this computer. first open the DOS window, and then enter the directory Mysql\bin, and then type the command Mysql-u root-p, after the

Mysql Common Command Daquan Scripting Home Summary _mysql

MySQL Common commands1. Export the entire databaseMysqldump-u user name-p--default-character-set=latin1 Database name > exported file name (database default encoding is latin1)Mysqldump-u wcnc-p SMGP_APPS_WCNC > Wcnc.sql2. Export a tableMysqldump-u

PHP get MySQL field name and other information example _php instance

First we need to know the following SQL statement to query MySQL database/table related information: Copy Code code as follows: Show DATABASES//list MySQL Server database. Show table [from db_name]//list database datasheet. Show CREATE

How to use the show instruction in Mysql details _mysql

This article mainly introduces the main usage of the show command in MySQL database A. Show tables or show tables from database_name; --Displays the names of all tables in the current database. B. show databases; --Displays the names of all

PHP get the names and details of the fields in the MySQL datasheet _php tips

First we need to know the following SQL statement to query MySQL database/table related information: Copy Code code as follows: Show DATABASES//list MySQL Server database. Show table [from db_name]//list database datasheet. Show

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