一.新增my.ini

文件內容如下：

# 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.[mysqld] #skip-grant-tables # 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 = ..... basedir ="C:\MySql\mysql-8.0.20-winx64 # 設置mysql的安裝目錄 datadir ="C:\MySql\mysql-8.0.20-winx64\data" # 設置mysql數據庫的數據的存放目錄，必須是data，或者是//xxx/data # 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 #服務端的編碼方式 character-set-server=utf8mb4 [client] #客戶端編碼方式，最好和服務端保存一致 loose-default-character-set=utf8mb4[WinMySQLadmin] Server = "C:\MySql\mysql-8.0.20-winx64\bin\mysqld.exe"

二.修改環境變量

計算機——屬性——高級系統設置——環境變量
選擇path新增mysql安裝bin目錄路徑

三.初始化

在bin目錄下cmd運行

3.1.mysqld --initialize --console

執行過后找到A temporary password is generated for root@localhost: 這句，localhost后面就是自己的初始化密碼。

若此時彈出缺少MSVCP140.dll，安裝VC_redist.exe。

若報錯ound option without preceding group in config file:，將my.ini文件編碼方式由utf-8改為ANSI

3.2.net start mysql

啟動服務，則輸入

若服務名無效
輸入 mysqld --install

若要刪除mysql，可執行命令

mysqld --remove mysql

3.3.mysql -u root -p

進行登錄數據庫，這時提示需要密碼，然后就是用上面的密碼登錄

3.4.修改密碼

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456'; 或 ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';

修改密碼為：123456

四.新增賬戶

create user 'demo'@'%' identified with mysql_native_password BY '123456';

五.修改權限：

grant all privileges on *.* to 'demo'@'%' with grant option;

六.刷新

flush privileges;

七.備份

mysqldump -udemo -p123456 demo table >baktable.sql; --single-transaction 鎖定數據庫防止其他事物操作導致數據不一致 ### 七.導入庫 source

七.刪除庫

drop database demo;

總結

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