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03. 專注Study/Android/ADB 取得 APK 的 icon.md
03. 專注Study/Android/ADB.md
03. 專注Study/Android/AOSP.md
03. 專注Study/Android/Android programming.md
03. 專注Study/Android/AudioTrack.md
03. 專注Study/Android/Ktor.md
03. 專注Study/Android/Service.md
03. 專注Study/Android/Tools.md
03. 專注Study/Android/UI.md
03. 專注Study/C++/C++17.md
03. 專注Study/C++/Class template.md
03. 專注Study/C++/GCC.md
03. 專注Study/C++/Structured binding declaration.md
03. 專注Study/C++/for_each.md
03. 專注Study/C++/lambda.md
03. 專注Study/C++/lvalue.md
03. 專注Study/C++/move operator.md
03. 專注Study/C++/rvalue.md
03. 專注Study/C++/智慧指標.md
03. 專注Study/RxKotlin/20200207 - Study RxKotlin.md
04. Programming/COM/20210726 - COM Interface.md
04. Programming/DB/MySQL.md
04. Programming/DB/sqlite.md
04. Programming/Design Pattern.md
04. Programming/FFMPEG/00. Introduction.md
04. Programming/FFMPEG/01. Setup.md
04. Programming/FFMPEG/FFMpeg.md
04. Programming/Flask.md
04. Programming/Kotlin/class.md
04. Programming/Kotlin/run, let, with, also 和 apply.md
04. Programming/Media Foundation/20210604 - Windows media foundation.md
04. Programming/OpenCV.md
04. Programming/OpenGL.md
04. Programming/Python/argparse.ArgumentParser.md
04. Programming/Python/decorator.md
04. Programming/Python/logging.md
04. Programming/Python/opencv.md
04. Programming/Python/subprocess.md
04. Programming/Python/threading.md
04. Programming/Python/tkinter.md
04. Programming/Python/檢測工具.md
04. Programming/QT/Dropdown button.md
04. Programming/QT/QVariant.md
04. Programming/QT/Qt.md
04. Programming/UML.md
04. Programming/演算法.md
05. 資料收集/99. templates/blogHeader.md
05. 資料收集/99. templates/date.md
05. 資料收集/99. templates/front matter.md
05. 資料收集/99. templates/note.md
05. 資料收集/99. templates/table.md
05. 資料收集/99. templates/thisWeek.md
05. 資料收集/99. templates/日記.md
05. 資料收集/99. templates/讀書筆記.md
05. 資料收集/Linux/CLI/cut.md
05. 資料收集/Linux/CLI/scp.md
05. 資料收集/Linux/CLI/timedatectl.md
05. 資料收集/Linux/Programming.md
05. 資料收集/Linux/Ubuntu.md
05. 資料收集/Tool Setup/Hardware/RaspberryPi.md
05. 資料收集/Tool Setup/Software/Chrome.md
05. 資料收集/Tool Setup/Software/Obisidian.md
05. 資料收集/Tool Setup/Software/SublimeText.md
05. 資料收集/Tool Setup/Software/VirtualBox.md
05. 資料收集/Tool Setup/Software/Visual Studio Code.md
05. 資料收集/Tool Setup/Software/Windows Setup.md
05. 資料收集/Tool Setup/Software/Windows Terminal.md
05. 資料收集/Tool Setup/Software/freefilesync.md
05. 資料收集/Tool Setup/Software/vim.md
05. 資料收集/名言佳句.md
05. 資料收集/架站/Gitea.md
05. 資料收集/架站/HTTP Server/Apache.md
05. 資料收集/架站/HTTP Server/Nginx/Reverse Proxy(Layer4).md
05. 資料收集/架站/Pelican blog.md
05. 資料收集/架站/Proxmox VE.md
05. 資料收集/架站/SWAG Reverse proxy.md
05. 資料收集/架站/Storj.md
05. 資料收集/架站/Trojan.md
05. 資料收集/每週外食.md
05. 資料收集/科技/802.11.md
05. 資料收集/科技/HDR Sensor.md
05. 資料收集/科技/量子電腦.md
05. 資料收集/科技/鋰電池.md
05. 資料收集/興趣嗜好/RC/Traxxas Sledge.md
05. 資料收集/興趣嗜好/RC/好盈電變調整中立點.md
05. 資料收集/興趣嗜好/RC/差速器調教教學.md
05. 資料收集/興趣嗜好/模型/舊化作例.md
05. 資料收集/興趣嗜好/軍武/虎式.md
05. 資料收集/讀書筆記/20201201 - 學習如何學習.md
05. 資料收集/讀書筆記/20201218 - Kotlin權威2.0.md
05. 資料收集/讀書筆記/20201224 - 寫作是最好的自我投資.md
05. 資料收集/讀書筆記/20210119 - 中產悲歌.md
05. 資料收集/讀書筆記/20210220 - 最高學習法.md
05. 資料收集/讀書筆記/20210320 - 最高學以致用法.md
05. 資料收集/讀書筆記/20210406 - 精準購買.md
05. 資料收集/讀書筆記/20210723 - 高手學習.md
05. 資料收集/讀書筆記/20220526 - 深入淺出設計模式.md
05. 資料收集/讀書筆記/20220619 - 精確的力量.md
05. 資料收集/軟體工具/IPFS.md
05. 資料收集/軟體工具/MkDocs.md
05. 資料收集/軟體工具/Obsidian.md
05. 資料收集/軟體工具/docker.md
05. 資料收集/軟體工具/git/apply.md
05. 資料收集/軟體工具/git/submodule.md
05. 資料收集/軟體工具/youtube-dl.md
05. 資料收集/面試準備/技术面试最后反问面试官的话.md
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## Install MySQL
- 下載MySQL： https://downloads.mysql.com/archives/installer/
- 安裝
- 安裝之後，執行MSQL Installer - Community
- ![[Pasted image 20210423152623.png]]
- 選擇MySQL Server的Reconfigure
- ![[Pasted image 20210423152747.png]]
- 依序設定port、帳號密碼。
## Install MariaDB
1. `sudo apt install mariadb-server`
2. Configuring MariaDB: `sudo mysql_secure_installation`
這步驟會問幾個問題，大概是：
1.　輸入目前root的密碼
2.　是否要切換為unix_socket？ -> No
3.　要變更root的密碼嗎？-> No
3. Testing MariaDB: `sudo systemctl status mariadb`
4. Show version: `sudo mysqladmin version`
## Syntax
### Basic
login as root: `mysql -u root -p`
### User management
#### Create user
```sql
CREATE USER 'testuser'@'localhost' IDENTIFIED BY 'test123test!';
```
#### Remove user
```sql
DROP USER 'testuser'@'localhost';
```
#### Grant user's permission
Below commands grant user's permission to *CREATE* and *DROP*.
```sql
GRANT CREATE ON *.* TO 'testuser'@'localhost';
GRANT DROP ON tutorial_database.* TO 'testuser'@'localhost';
FLUSH PRIVILEGES;
```
#### Remove user's permission
```sql
REVOKE <permission> ON database.table FROM 'user'@'localhost';
```
上面命令中的`<permission>`必須替換成下面的其中一個：
- ALL - Allow complete access to a specific database. If a database is not specified, then allow complete access to the entirety of MySQL.
- CREATE - Allow a user to create databases and tables.
- DELETE - Allow a user to delete rows from a table.
- DROP - Allow a user to drop databases and tables.
- EXECUTE - Allow a user to execute stored routines.
- GRANT OPTION - Allow a user to grant or remove another user's privileges.
- INSERT - Allow a user to insert rows from a table.
- SELECT - Allow a user to select data from a database.
- SHOW DATABASES- Allow a user to view a list of all databases.
- UPDATE - Allow a user to update rows in a table.
例如：`REVOKE CREATE ON *.* FROM 'testuser'@'localhost';`
最後，不要忘記`FLUSH PRIVILEGES;`
#### Show user's permission
```sql
SHOW GRANTS FOR 'testuser'@'localhost';
```
#### Change user's password
```sql
ALTER USER 'user-name'@'localhost' IDENTIFIED BY 'NEW_USER_PASSWORD';
```
#### View all users
```sql
SELECT User,Host FROM mysql.user;
```
### Database
#### Show all databases
```sql
SHOW DATABASES;
```
### Create table
The rule:
```sql
CREATE TABLE table_name (column_name column_type);
```
Example:
```sql
CREATE TABLE tutorials_tbl(
tutorial_id INT NOT NULL AUTO_INCREMENT,
tutorial_title VARCHAR(100) NOT NULL,
tutorial_author VARCHAR(40) NOT NULL,
submission_date DATE,
PRIMARY KEY ( tutorial_id )
);
```
```sql
use autostation;
CREATE TABLE station_state(
id CHAR(255) NOT NULL,
ip CHAR(255) NOT NULL,
dhcp_ip CHAR(255) NOT NULL,
name CHAR(255) NOT NULL,
setupfilemd5 CHAR(255) NOT NULL,
setupfileversion CHAR(255) NOT NULL,
status CHAR(255) NOT NULL,
update_time DATETIME NOT NULL,
PRIMARY KEY ( id )
);
```
### Insert
The rule:
```
INSERT INTO <table_name> ( field1, field2,...fieldN )
VALUES
( value1, value2,...valueN );
```
Example:
```
INSERT INTO client_state ( field1, field2,...fieldN )
VALUES
( value1, value2,...valueN );
```
## 參考
-　[Create a MySQL User on Linux via Command Line | Liquid Web](https://www.liquidweb.com/kb/create-a-mysql-user-on-linux-via-command-line/)
-　[Grant Permissions to a MySQL User on Linux via Command Line | Liquid Web](https://www.liquidweb.com/kb/grant-permissions-to-a-mysql-user-on-linux-via-command-line/)
-　[Remove Permissions for a MySQL User on Linux via Command Line - Liquid Web](https://www.liquidweb.com/kb/remove-permissions-for-a-mysql-user-on-linux-via-command-line/)
-　[Remove a MySQL User on Linux via Command Line - Liquid Web](https://www.liquidweb.com/kb/remove-a-mysql-user-on-linux-via-command-line/)