MySQL & view

MySql 視圖

mysql 視圖

https://www.cnblogs.com/chenpi/p/5133648.html

MySql 視圖修改

MySql視圖view的使用：創建、修改、刪除 - IT筆錄

https://itbilu.com/database/mysql/E1q5C22_.html#update

注：用 AS 來重命名原始列名

https://blog.csdn.net/pythonkiddz/article/details/55059162
https://blog.csdn.net/moxigandashu/article/details/63254901

https://www.jb51.net/article/36363.htm

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SQL & MySQL

http://www.runoob.com/sql/sql-tutorial.html

http://www.runoob.com/mysql/mysql-tutorial.html

# admin

$ net start mysql

$ mysql --help

# login
$ mysql -u root -p pwd123456

# login
$ mysql -u root -p 
# pwd123456

# login
$ mysql -u -p
# root
# pwd123456

solution

???

https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html

https://dev.mysql.com/doc/refman/5.7/en/password-security-user.html

# help
$ mysql --help
$ mysql -?
$ mysql -I

# version
$ mysql ---version
$ mysql -V
# mysql  Ver 14.14 Distrib 5.7.22, for Win64 (x86_64)

not work ???

$ mysql -?

Default options are read from the following files in the given order:

C:\WINDOWS\my.ini
C:\WINDOWS\my.cnf
C:\my.ini
C:\my.cnf
H:\MySQL\mysql-5.7.22-winx64\my.ini
H:\MySQL\mysql-5.7.22-winx64\my.cnf

$ mysql --defaults-extra-file=H:/MySQL/mysql-5.7.22-winx64/my.cnf

my.cnf

[client]
user = root
password = pwd123456
host = localhost

my.ini

[mysql]
# 設置mysql客戶端默認字符集
default-character-set=utf8

[mysqld]
# 設置3306端口
port = 3306
# 設置mysql的安裝目錄
basedir=H:\MySQL\mysql57
# 設置mysql數據庫的數據的存放目錄
datadir=H:\MySQL\sqldata
# 允許最大連接數
max_connections=20
# 服務端使用的字符集默認為8比特編碼的latin1字符集
character-set-server=utf8
# 創建新表時將使用的默認存儲引擎
default-storage-engine=INNODB

OK

# admin
$ net start mysql

# mysql --user=your-user-name --password=your-password
$ mysql -uroot -p
# password
$ ******


$mysql> show databases;

$mysql> use test;

$mysql> show tables;


$mysql> select * from user;

# beautiful & format

$mysql> select * from user \G;

http://dev.mysql.com/doc/refman/5.7/en/select.html