1.首先到http://dev.mysql.com/ 上下载windows版mysql5.6免安装zip包。然后将zip包解压到D:\mysql-5.6.20-winx64下。
2.在D:\mysql-5.6.20-winx64下创建my.ini。
注意！！！如果你不是解压到D:\mysql-5.6.20-winx64，下面第23、24、29、31行的代码要改成你的安装目录！！！
内容如下：
# For advice on how to change settings please see3.设置环境变量。
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.
[mysqld]
character-set-server=utf8
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# These are commonly set, remove the # and set as required.
# basedir = .....
# datadir = .....
# port = .....
# server_id = .....
basedir=D:/mysql-5.6.20-winx64
datadir=D:/mysql-5.6.20-winx64/data
port=13306
character-set-server=utf8
default-storage-engine=INNODB
innodb_data_home_dir=D:/mysql-5.6.20-winx64/data
innodb_data_file_path=ibdata1:12M:autoextend
innodb_log_group_home_dir=D:/mysql-5.6.20-winx64/data
innodb_buffer_pool_size=10240M
innodb_log_file_size=4G
innodb_lock_wait_timeout = 500
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
# sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
进入系统属性，点下面的环境变量。
系统变量底下点新建
如下图所示，填写完毕后点确定。（我的是D:\mysql-5.6.20-winx64\bin，你需要改成自己的bin目录）
找到系统变量中的Path，点下面的编辑。
点编辑文本。
在变量值最后加上;%MYSQL_HOME%（注意前面有分号后面没有分号！！！）
4.管理员身份进入命令提示符
输入：
mysqld --console
5.注册mysql为windows service. 以后可以使用windows service来安装mysql和卸载mysql的服务。
进入D:\mysql-5.6.20-winx64\bin目录
安装mysql服务
mysqld install
进入服务，控制面板-管理工具-服务(以管理员身份运行)
启动MySQL服务
net start mysql --启动mysql服务
net stop mysql --停止mysql服务
使用root用户登陆数据库，端口号为13306，密码为空
mysql -P13306 -u root -p
查看数据库文件存放路径
show global variables like "%datadir%";
查看所有数据库
show databases;
密码改为ROOT
GRANT ALL ON *.* TO 'root'@'localhost' IDENTIFIED BY 'ROOT';
show engines; --查看MySQL存储引擎
\q --退出MySQL
