MYSQL入门学习之十七：MYSQL命令行内可使用的命令详细说明(二)
(\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
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。