Mac下 MySQL安裝配置筆記

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MySQL

安装

步骤1 下载安装

安装地址：https://dev.mysql.com/downloads/mysql/

安装：按要求一路安装到底即可。

步骤2 环境变量配置

输入命令，打开文件

vi ~/.bash_profile

贴入下面的语句

export PATH=${PATH}:/usr/local/mysql/bin

按下esc键，保存文件并退出

:wq

重置密码

步骤1 关闭MySQL服务

苹果-》系统偏好-》关闭mysql服务；

步骤2 打开iTerm输入命令

//切换目录
cd /user/local/mysql/bin

//取得管理员权限
sudo su

//输入以下命令禁止mysql的验证功能
./mysqld_safe --skip-grant-tables &

//回车输入
./mysql

//切换目录
cd /usr/local/bin/

//回车输入
sudo ln -fs /usr/local/mysql/bin/mysql mysql0

//回车输入
sudo ln -fs /usr/local/mysql/bin/mysql mysql1

最后输入mysql -u root -p 回车就可以输入重置的密码了。

修改MySQL编码格式

步骤1 检查当前数据库编码格式，输入命令

show variables like '%char%';

步骤2 修改mysql的配置文件 my-default.cnf

前提：需要关闭mysql进程。

路径是：/usr/local/mysql/support-files。

如果没有则需要新建一个my-default.cnf文件，修改文件名为my.cnf。

//复制文件到etc目录下
sudo cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf

//重新编辑my.cnf文件
sudo vi /etc/my.cnf
[client]部分加入：
default-character-set=utf8
[mysqld]部分加入：
character-set-server=utf8

//保存退出
:wq

重启终端后再查看mysql编码格式就是utf-8了。

my.cnf文件

# 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.

#更改数据库编码需要更改的
[mysqld]
character-set-server=utf8

#备份数据库需要更改的
[mysqldump]
user=root
password=123456

# 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 = .....
# socket = .....

# 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

Windows下MySQL的配置

1、启动/关闭数据库命令：net start mysql，net stop mysql。
2、设置数据库登录不需要密码：
①找到mysql配置环境变量的安装地址。
②打开my.nin文件，加上一句skip-grant-tables，具体位置看截图。