show columns

Show tables or show tables from DATABASE; Explanation: Displays the names of all tables in the current database Show DATABASES; Explanation: Displays the names of all the databases in MySQL Show Processlist; Explanation: Displays all processes

How to create a CSV file Method 1-Use HTTP headers As for Word and Excel, you need to add header information to the PHP script example. The following code fragment creates a specified table including its column name CSV file. The user is then

The performance problem arises when ALTER TABLE is performed on a large table. MySQL Most of the changes are as follows: Create an empty table based on the new table structure, remove the data from the old table and insert it into the new table,

Open the My.ini file, under the location installation directory, add an open log configuration, restart MySQL # SERVER section#----------------------------------------------------------------------# # The following options would Be read by the MySQL

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

1. Connection database format: mysql-h host address-u user name-P user password 1.1. Connect to MySQL on this computer. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after you are

1. Use database_name;2. Set names UTF8; (or other required encoding)3. Source example.sql (SQL file storage path)MySQL installation directoryDatabase directory/var/lib/mysql/Configuration file/usr/share/mysql (mysql.server command and configuration

1. Show CHARACTER set shows all available character sets' UTF8 ' ; +---------+---------------+-------------------+--------+| Charset | Description | Default Collation | MaxLen |+---------+---------------+-------------------+--------+| UTF8 | utf-83 |

Auto Number: Auto_incrementIn a data table, to set the uniqueness of a field, a number is used to ensure that the uniqueness of the number is one way to avoid duplicate names and data clutter.Primary key, a table can only and only one. When creating

This article mainly introduces the main usage of the show command in MySQL database, e mentor Network There is a more detailed introduction, as well as basic related teaching. 1, show tables or show tables from database_name; --Displays the names of

There are a lot of basic commands in MySQL, and the show command is one of them, and it's easy to confuse the use of SHOW commands among many users, and this article brings together the many uses of the show command.A. Show tables or show tables

Basic Primer============ Management mysql==========1. View MySQL version mysqladmin--version2. Start MySQL/etc/init.d/mysqld Startmysqld_safe&3after you have just installed MySQL, first change the password mysqladmin-U root Password"New_password";4.

First, we'll show you the statement when you created the database:Mysql>create table worker (id char (one) primary key, name varchar (), work varchar (all), part Varcha R (), sex enum (' Male ', ' female ') not null, birth date);This is the

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

1. Display the list of databasesshow databases; # View all current databasesShow Databases \g #以行的方式显示2. On the command line, execute the SQL statementMysql-e ' show databases '-uroot-p123456mysqlshow-uroot-p123456 # not used, just remember the one

mysql> show databases;Mysql> Show Databases \g #以行的方式显示-e commonly used with shell scripts.[Email protected] ~]# mysql-e ' show databases '-usystem-p123456mysql> CREATE DATABASE HA;mysql> CREATE database ' ha-test ';[Email protected] ~]#

MysqlTo modify a new password:Use MySQL;Update user set password= ' new password ' where user= ' username ';Flush privileges; Update permissionsAdd new users:Grant SELECT, Insert,update,delete on database. Table to username @ Login Host identified

A good memory is better than a random writing .... The following collection of the MySQL show in the use of skills .... If you need a friend, you can have a look.A. Show tables or show tables from database_name;//displays the names of all tables in

To create a database:CREATE database [IF not EXISTS] Library nameExample:CREATE DATABASE ' mydb ';CREATE DATABASE IF not EXISTS ' mydb ';Attention:If the library name already exists, not adding if not exists will error, plus only warning.To delete a

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