MYSQL入门学习之十七：MYSQL命令行内可使用的命令详细说明_MySQL

MYSQL入门学习之十七：MYSQL命令行内可使用的命令详细说明

相关链接：

MYSQL入门学习之一：基本操作

http:///database/201212/173868.html

MYSQL入门学习之二：使用正则表达式搜索

http:///database/201212/173869.html

MYSQL入门学习之三：全文本搜索

http:///database/201212/173873.html

MYSQL入门学习之四：MYSQL的数据类型

http:///database/201212/175536.html

MYSQL入门学习之五：MYSQL的字符集

http:///database/201212/175541.html

MYSQL入门学习之六：MYSQL的运算符

http:///database/201212/175862.html

MYSQL入门学习之七：MYSQL常用函数

http:///database/201212/175864.html

MYSQL入门学习之八：数据库及表的基本操作

http:///database/201212/175867.html

MYSQL入门学习之九：索引的简单操作

http:///database/201212/176772.html

MYSQL入门学习之十：视图的基本操作

http:///database/201212/176775.html

MYSQL入门学习之十一：触发器的基本操作

http:///database/201212/176781.html

MYSQL入门学习之十二：存储过程的基本操作

http:///database/201212/177380.html

MYSQL入门学习之十三：自定义函数的基本操作

http:///database/201212/177382.html

MYSQL入门学习之十四：游标的基本操作

http:///database/201212/177384.html

MYSQL入门学习之十五：事务处理的基本操作

http:///database/201212/177385.html

MYSQL入门学习之十六：MYSQL命令参数详解

http:///database/201212/178079.html

在MYSQL命令行中，有一些非常实用的小命令可以使用。

进行MYSQL命令行后，输入/h，可查看MYSQL命令行支持的小命令及对应的功能说明：

[sql]

mysql> /h

For information about MySQL products and services, visit:

http://www.mysql.com/

For developer information, including the MySQL Reference Manual, visit:

http://dev.mysql.com/

To buy MySQL Network Support, training, or other products, visit:

https://shop.mysql.com/

List of all MySQL commands:

Note that all text commands must be first on line and end with ';'

? (/?) Synonym for `help'.

clear (/c) Clear command.

connect (/r) Reconnect to the server. Optional arguments are db and host.

delimiter (/d) Set statement delimiter. NOTE: Takes the rest of the line as new delimiter.

ego (/G) Send command to mysql server, display result vertically.

exit (/q) Exit mysql. Same as quit.

go (/g) Send command to mysql server.

help (/h) Display this help.

notee (/t) Don't write into outfile.

print (/p) Print current command.

prompt (/R) Change your mysql prompt.

quit (/q) Quit mysql.

rehash (/#) Rebuild completion hash.

source (/.) Execute an SQL script file. Takes a file name as an argument.

status (/s) Get status information from the server.

tee (/T) Set outfile [to_outfile]. Append everything into given outfile.

use (/u) Use another database. Takes database name as argument.

charset (/C) Switch to another charset. Might be needed for processing binlog with multi-byte charsets.

warnings (/W) Show warnings after every statement.

nowarning (/w) Don't show warnings after every statement.

For server side help, type 'help contents'

这段输出主要包含两部分信息：

第一部分为MYSQL客户端相关的小命令，其对应的中文翻译如下：

? (/?) 显示帮助信息。与/h的功能相同

clear (/c) 不执行当前正在输入的命令。若/c前已包含命令分隔符，则命令分隔符之前的部分仍然执行。

connect (/r) 重新连接到服务器。该命令有两个参数：数据库名和服务器主机名，其中主机名可省略。

delimiter (/d) 修改命令分隔符

ego (/G) 将命令的结果以垂直的形式显示

exit (/q) 退出

go (/g) 向服务器发送命令。在语句的最后使用，可替代命令分隔符。

help (/h) 显示帮助信息。与/?的功能相同

notee (/t) 不要写入OUTFILE

print (/p) 显示当前执行的命令

prompt (/R) 修改MYSQL的提示符

quit (/q) 退出

rehash (/#)

source (/.) 执行参数文件中的SQL脚本

status (/s) 获取服务器端状态

tee (/T) 指定一个输出文件，将命令行中的所有操作及结果记入此文件

use (/u) 转换当前使用的数据库

charset (/C) 转换当前connection及client的字符集

warnings (/W) 显示警告信息

nowarning (/w) 不显示警告信息 示例：

[sql]

mysql> select count(*) from newname/c

mysql> select count(*) from newname;/c

+----------+

| count(*) |

+----------+

| 159 |

+----------+

mysql>/R this is mysql5 >

PROMPT set to 'this is mysql5 >'

this is mysql5 >/. h:/select.sql

+----------+

| count(*) |

+----------+

| 159 |

+----------+

this is mysql5 >/s

--------------

mysql Ver 14.14 Distrib 5.1.28-rc, for Win32 (ia32)

Connection id: 25

Current database: test

Current user: root@localhost

SSL: Not in use

Using delimiter: ;

Server version: 5.1.28-rc-community MySQL Community Server (GPL)

Protocol version: 10

Connection: localhost via TCP/IP

Server characterset: latin1

Db characterset: latin1

Client characterset: gbk

Conn. characterset: gbk

TCP port: 3306

Uptime: 1 hour 29 min 31 sec

Threads: 1 Questions: 55 Slow queries: 0 Opens: 24 Flush tables: 1 Open tables: 5 Queries per second avg: 0.10

--------------

this is mysql5 >/T h:/a.txt

Logging to file 'h:/a.txt'

this is mysql5 >/q

Bye

第二部分为查看MYSQL服务端相关信息的命令，使用help contents可以查看其用法：

[sql]

mysql> help contents

You asked for help about help category: "Contents"

For more information, type 'help ', where is one of the following

categories:

Account Management

Administration

Data Definition

Data Manipulation

Data Types

Functions

Functions and Modifiers for Use with GROUP BY

Geographic Features

Language Structure

Plugins

Storage Engines

Stored Routines

Table Maintenance

Transactions

Triggers

对于某些help命令的结果，仍然可以使用help进行进一步的查看。如help Data Types的结果如下：

[sql]

mysql> help Data Types

You asked for help about help category: "Data Types"

For more information, type 'help ', where is one of the following

topics:

AUTO_INCREMENT

BIGINT

BINARY

BIT

BLOB

BLOB DATA TYPE

BOOLEAN

CHAR

CHAR BYTE

DATE

DATETIME

DEC

DECIMAL

DOUBLE

DOUBLE PRECISION

ENUM

FLOAT

INT

INTEGER

LONGBLOB

LONGTEXT

MEDIUMBLOB

MEDIUMINT

MEDIUMTEXT

SET DATA TYPE

SMALLINT

TEXT

TIME

TIMESTAMP

TINYBLOB

TINYINT

TINYTEXT

VARBINARY

VARCHAR

YEAR DATA TYPE

仍然可以使用help INT，查看INT数据类型的详细信息：

[sql]

mysql> help INT

Name: 'INT'

Description:

INT[(M)] [UNSIGNED] [ZEROFILL]

A normal-size integer. The signed range is -2147483648 to 2147483647.

The unsigned range is 0 to 4294967295.

URL: http://dev.mysql.com/doc/refman/5.1/en/numeric-type-overview.html

由结果可以查看INT类型的用法，以及INT数据类型能表示的数据范围。