windows下安装mysql 5.7.*

要以管理员的身份运行cmd

1.下载mysql解压缩版本

http://dev.mysql.com/downloads/mysql/

2.解压缩本地目录(我的是F盘)

3.在根目录下建立my.ini文件内容：

# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.7/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.

[client]

default-character-set=utf8

[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 = "F:\mysql-5.7.12-winx64"

datadir = "F:\mysql-5.7.12-winx64\data"

tmpdir = "F:\mysql-5.7.12-winx64\data"

socket = "F:\mysql-5.7.12-winx64\data\mysql.sock"

port = 3306

log-error = "F:\mysql-5.7.12-winx64\data\mysql_error.log"

# server_id = .....

max_connections = 100

table_open_cache = 256

query_cache_size = 1M

tmp_table_size = 32M

thread_cache_size = 8

innodb_data_home_dir = "F:\mysql-5.7.12-winx64\data\"

innodb_flush_log_at_trx_commit = 1

innodb_log_buffer_size = 128M

innodb_buffer_pool_size = 128M

innodb_log_file_size = 10M

innodb_thread_concurrency = 16

innodb-autoextend-increment = 1000

# 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 = 32M

read_rnd_buffer_size = 32M

max_allowed_packet = 32M

explicit_defaults_for_timestamp = true

sql_mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

4.最新版本的mysql，要初始化，初始化代码如下：

mysqld  --initialize-insecure        （前提是要配置mysql的bin目录到环境变量里边，如果不配置的话，要切换到mysql的bin目录下）

以上代码将会生成一个没有密码的root用户，如果不加-insecure那么root用户的密码是随机生成到，到存在

log-error = "F:\mysql-5.7.12-winx64\data\mysql_error.log"

5.把mysql添加到服务中：

mysqld --install mysql //添加

//mysqld --remove mysql 删除

6.启动服务

net start mysql

//net stop mysql 停止服务

7.连接数据库

mysql -uroot -p

//此时的密码为空

8.修改数据库密码为：admin123

use mysql;

set password = password("admin123")