I. environment construction

This paper only builds learning in windows environment.

1. Download mysql
   Because the install package can be installed directly, this chapter only explains the installation of decompression package.
   Download website: http://dev.mysql.com/downloads/mysql/， Download mysql-8.0.15-winx64.zip
   

2. Configure environment variables
   Put the extracted bin directory in the path, such as (f:\ mysql-8.0.15-winx64\bin)

3. Configure mysql
   In f:\ mysql-8.0.15-winx64 \, create a new my.ini

The contents are as follows:

[client]
port=3306
default-character-set=utf8
[mysqld]
port=3306
character_set_server=utf8
#Decompress directory
basedir=f:\ mysql-8.0.15-winx64\
#Extract the data directory under the directory
datadir=f:\ mysql-8.0.15-winx64\dat
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

1. windows command line running mysql installation, etc

cd f:\ mysql-8.0.15-winx64\bin # Entry directory
> mysqld -initialize # Initialize mysql and generate files in data folder
> mysqld -install # Install mysql
> net start mysql # Start mysql server

# Enter mysql
> mysql -uroot -p 
password:Enter directly

II. Common commands

(tip: !!! : high risk operation)

2.1 database operation

CREATE DATABASE dbname; # Create database
DROP dbname; # Delete database!!!
USE dbname; # Use database

2.2 data table operation

CREATE TABLE tbname (column_name column_type); # Create data table
DROP TABLE tbname; # Delete data table!!!

2.3 view operation

# Create a myview view view and merge the information corresponding to the two tables
CREATE.VIEW myview AS
 SELECT
   a.name AS name 
   b.class AS class
 FROM
   studemt a # student table specified as a
   class b # class table specified as b
 where
   a.id = b.id # When the. IDs of tables a and b are equal

2.4 data operation (add, delete, modify and query)

# increase
INSERT [ignore] INTO tbname field1.. VALUES value1.. # Increase the value1 value in the field1 attribute of the tbname table

# Delete
DELETE FROM tbname WHERE # Remove WHERE compliant values from the tbname table
DELETE FROM tbname # Delete all data in tbname table!!!

# change
UPDATE tbname SET field1..=value1.. WHERE # When the tbname table matches WHERE, change the value of field1 attribute to value1

#  check
SELECT * FROM tbname [ order by ASC,DESC ] # Display tbname table in [positive, reverse] order