MySQL 8 带来了全新的体验，比如支持 NoSQL、JSON 等，拥有比 MySQL 5.7 两倍以上的性能提升。本文讲解如何在 Windows 下安装 MySQL 8，以及基本的 MySQL 用法。
下载
下载地址
本例为：MySQL Community Server 8.0.12。
解压
解压至安装目录，比如 D 盘根目录下。
本例为：D:/mysql-8.0.12-winx64。
创建 my.ini
my.ini 是 MySQL 安装的配置文件：
| [mysqld]# 安装目录basedir=D://mysql-8.0.12-winx64# 数据存放目录datadir=D://mysqlData//data |
my.ini放置在 MySQL 安装目录的根目录下。需要注意的是，要先创建D:/mysqlData目录。data目录是由 MySQL 来创建。
初始化安装
执行：
| mysqld --defaults-file=D:/mysql-8.0.12-winx64/my.ini --initialize --console |
控制台输出如下，说明安装成功：
| >mysqld --defaults-file=D:/mysql-8.0.12-winx64/my.ini --initialize --console2018-08-20T16:14:45.287448Z 0 [System] [MY-013169] [Server] D:/mysql-8.0.12-winx64/bin/mysqld.exe (mysqld 8.0.12) initializing of server in progress as process 50122018-08-20T16:14:45.289628Z 0 [ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.2018-08-20T16:14:45.299329Z 0 [ERROR] [MY-010119] [Server] Aborting2018-08-20T16:14:45.301316Z 0 [System] [MY-010910] [Server] D:/mysql-8.0.12-winx64/bin/mysqld.exe: Shutdown complete (mysqld 8.0.12) MySQL Community Server - GPL.D:/mysql-8.0.12-winx64/bin>mysqld --defaults-file=D:/mysql-8.0.12-winx64/my.ini --initialize --console2018-08-20T16:15:25.729771Z 0 [System] [MY-013169] [Server] D:/mysql-8.0.12-winx64/bin/mysqld.exe (mysqld 8.0.12) initializing of server in progress as process 181482018-08-20T16:15:43.569562Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: L-hk!rBuk9-.2018-08-20T16:15:55.811470Z 0 [System] [MY-013170] [Server] D:/mysql-8.0.12-winx64/bin/mysqld.exe (mysqld 8.0.12) initializing of server has completed |
其中，“L-hk!rBuk9-.”就是 root 用户的初始化密码。稍后可以做更改。
启动、关闭 MySQL server
执行mysqld就能启动 MySQL server，或者执行 mysqld –console可以看到完整的启动信息：
| >mysqld --console2018-08-20T16:18:23.698153Z 0 [Warning] [MY-010915] [Server] 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.2018-08-20T16:18:23.698248Z 0 [System] [MY-010116] [Server] D:/mysql-8.0.12-winx64/bin/mysqld.exe (mysqld 8.0.12) starting as process 163042018-08-20T16:18:27.624422Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.2018-08-20T16:18:27.793310Z 0 [System] [MY-010931] [Server] D:/mysql-8.0.12-winx64/bin/mysqld.exe: ready for connections. Version: '8.0.12' socket: '' port: 3306 MySQL Community Server - GPL. |
