Home Database Mysql Tutorial How to connect to mysql database

How to connect to mysql database

Apr 14, 2024 pm 07:12 PM
mysql python

Connecting to the MySQL database requires the following steps: Obtain connection information: server address, port, user name, password, database name. Choose a connection method: You can use a Python library (such as MySQLdb or pymysql) or the command line (such as MySQL). Perform queries and operations: After the connection is established, queries and update operations can be performed. Close connection: After the operation is completed, close the connection to release resources.

How to connect to mysql database

How to connect to MySQL database

Step one: Obtain connection information

  • Server address: the IP address or host name of the database server
  • Port: usually 3306
  • Username: the username of the database user
  • Password: Database user’s password
  • Database name: Name of the database to be connected

Step 2: Select the connection method

  • Use Python library (such as MySQLdb or pymysql):

    import mysql.connector
    
    # 创建连接对象
    conn = mysql.connector.connect(
      host="127.0.0.1",
      port=3306,
      user="username",
      password="password",
      database="database_name"
    )
    Copy after login
  • Use command line (such as MySQL):

    mysql -h 127.0.0.1 -P 3306 -u username -p password database_name
    Copy after login

Step 3: Perform queries and operations

Once the connection is established, you can perform queries and operations using:

  • Execute query:

    # 创建游标对象
    cursor = conn.cursor()
    
    # 执行查询
    cursor.execute("SELECT * FROM table_name")
    
    # 获取结果
    rows = cursor.fetchall()
    
    # 关闭游标
    cursor.close()
    Copy after login
  • Perform update operation:

    cursor.execute("UPDATE table_name SET field_name='new_value' WHERE condition")
    conn.commit()
    Copy after login

Step 4: Close the connection

After the operation is completed, please close the connection to release resources:

conn.close()
Copy after login

The above is the detailed content of How to connect to mysql database. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What is the reason why pipeline persistent storage files cannot be written when using Scapy crawler? What is the reason why pipeline persistent storage files cannot be written when using Scapy crawler? Apr 01, 2025 pm 04:03 PM

When using Scapy crawler, the reason why pipeline persistent storage files cannot be written? Discussion When learning to use Scapy crawler for data crawler, you often encounter a...

Python Cross-platform Desktop Application Development: Which GUI Library is the best for you? Python Cross-platform Desktop Application Development: Which GUI Library is the best for you? Apr 01, 2025 pm 05:24 PM

Choice of Python Cross-platform desktop application development library Many Python developers want to develop desktop applications that can run on both Windows and Linux systems...

What is the reason why the Python process pool handles concurrent TCP requests and causes the client to get stuck? What is the reason why the Python process pool handles concurrent TCP requests and causes the client to get stuck? Apr 01, 2025 pm 04:09 PM

Python process pool handles concurrent TCP requests that cause client to get stuck. When using Python for network programming, it is crucial to efficiently handle concurrent TCP requests. ...

How to view the original functions encapsulated internally by Python functools.partial object? How to view the original functions encapsulated internally by Python functools.partial object? Apr 01, 2025 pm 04:15 PM

Deeply explore the viewing method of Python functools.partial object in functools.partial using Python...

Python hourglass graph drawing: How to avoid variable undefined errors? Python hourglass graph drawing: How to avoid variable undefined errors? Apr 01, 2025 pm 06:27 PM

Getting started with Python: Hourglass Graphic Drawing and Input Verification This article will solve the variable definition problem encountered by a Python novice in the hourglass Graphic Drawing Program. Code...

How to optimize processing of high-resolution images in Python to find precise white circular areas? How to optimize processing of high-resolution images in Python to find precise white circular areas? Apr 01, 2025 pm 06:12 PM

How to handle high resolution images in Python to find white areas? Processing a high-resolution picture of 9000x7000 pixels, how to accurately find two of the picture...

How to efficiently count and sort large product data sets in Python? How to efficiently count and sort large product data sets in Python? Apr 01, 2025 pm 08:03 PM

Data Conversion and Statistics: Efficient Processing of Large Data Sets This article will introduce in detail how to convert a data list containing product information to another containing...

Difference in the decryption results of Node.js, Python and Go: Why does Node.js fail to decrypt AES-128-ECB? Difference in the decryption results of Node.js, Python and Go: Why does Node.js fail to decrypt AES-128-ECB? Apr 01, 2025 pm 04:36 PM

Differential analysis of output results of Node.js, Python and Go decryption algorithms This article will provide AES-128-ECB solutions implemented in three different programming languages ​​(Node.js, Python, Go)...

See all articles