在機器上首次安裝mysql，

作業系統是win7

mysql 的安裝檔案是 zip 格式的，版本是5.7.17

解壓之後，安裝步驟是

1、首先找個檔案存放這些安裝程式以及 資料

假設是E:\\mysql

2、把解壓的檔案放在E:\\mysql下，並且新建個data資料夾

3、建立環境變數mysql  路徑是E:\\mysql

新增到path 中  %MYSQL%\bin;

4、在解壓的資料夾下有個my-default.ini

的檔案，首先拷貝一份，重新命名為my.ini

修改檔案內容

只修改兩行就行

 basedir = E:\\mysql
 datadir = E:\\mysql\\data
 

5、用系統管理員身份啟動命令列

輸入mysqld  -install

這個是安裝mysql 服務的

6、輸入 mysqld --initialize

這個是因為 自動5.7.7版本之後，windows安裝mysql通過zip解壓的方式，不再包含data 資料夾，這個可以參考官網的介紹

http://dev.mysql.com/doc/refman/5.7/en/windows-initialize-data-directory.html

如果沒有data資料夾，則會在啟動mysql服務的時候起不來，觀察data資料夾下字尾名是.err的檔案就可以發現，會報這麼一些錯誤

MySQL: Table 'mysql.plugin' doesn't exist
2017-01-01T17:13:33.200113Z 0 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
2017-01-01T17:13:33.202113Z 0 [Note] Salting uuid generator variables, current_pid: 6908, server_start_time: 1483290810, bytes_sent: 0, 
2017-01-01T17:13:33.237115Z 0 [Note] Generated uuid: '9fb87162-d045-11e6-b092-00ff173a9c42', server_start_time: 1483297718, bytes_sent: 114009376
2017-01-01T17:13:33.241115Z 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: 9fb87162-d045-11e6-b092-00ff173a9c42.
2017-01-01T17:13:33.248116Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2017-01-01T17:13:33.250116Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key
2017-01-01T17:13:33.254116Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
2017-01-01T17:13:33.259116Z 0 [Note] IPv6 is available.
2017-01-01T17:13:33.260117Z 0 [Note]   - '::' resolves to '::';
2017-01-01T17:13:33.261117Z 0 [Note] Server socket created on IP: '::'.
2017-01-01T17:13:33.266117Z 0 [Warning] Failed to open optimizer cost constant tables

2017-01-01T17:13:33.268117Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist
2017-01-01T17:13:33.270117Z 0 [ERROR] Aborting
 

7、啟動服務 net start  mysql