mysql安装

window下通过压缩包安装
注：在解压的mysql根目录下创建一个txt文件，名字叫my，文件后缀为ini
之后复制下面这个代码放在文件下
（新解压的文件没有my.ini文件，需自行创建）
以下代码除安装目录和数据的存放目录需修改，其余不用修改

my.ini文件内容


[mysqld]
# 设置3306端口
port=3306
# 设置mysql的安装目录   ----------是你的文件路径-------------
basedir=E:\mysql\mysql
# 设置mysql数据库的数据的存放目录  ---------是你的文件路径data文件夹自行创建
datadir=E:\mysql\mysql\data
# 允许最大连接数
max_connections=200
# 允许连接失败的次数。
max_connect_errors=10
# 服务端使用的字符集默认为utf8mb4
character-set-server=utf8mb4
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB
# 默认使用“mysql_native_password”插件认证
#mysql_native_password
default_authentication_plugin=mysql_native_password
[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8mb4
[client]
# 设置mysql客户端连接服务端时默认使用的端口
port=3306
default-character-set=utf8mb4

初始化mysql
cd E:\mysql\mysql\bin\

管理员cmd下执行
mysqld --initialize --console
如下所示：

6917Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-01-14T10:34:03.950823Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-01-14T10:34:04.032027Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 7ea050fc-7525-11ec-a9ba-00ff052ac560.
2022-01-14T10:34:04.038156Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-01-14T10:34:05.153889Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-01-14T10:34:05.154187Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-01-14T10:34:05.155637Z 0 [Warning] CA certificate ca.pem is self signed.
2022-01-14T10:34:05.345586Z 1 [Note] A temporary password is generated for root@localhost: cdppVhzlh4#q

执行完后会有初始密码保存下来

安装mysql服务

mysqld --install mysql

启动服务

net start mysql

mysql -uroot -p

修改新密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

如果服务存在，删除服务

sc delete mysql