国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

current location：Home > Technical Articles > Daily Programming

  • how to check mysql version on windows command prompt
    how to check mysql version on windows command prompt
    To check the MySQL version, you can use the following methods in the Windows command prompt: 1. Use the command line to view directly, enter mysql--version or mysql-V; 2. After logging in to the MySQL client, execute SELECTVERSION();; 3. Manually search through the installation path, switch to the MySQL bin directory and run mysql.exe--version. These methods are suitable for different scenarios, the first two are most commonly used, and the third one is suitable for situations where environment variables are not configured.
    Mysql Tutorial . Database 720 2025-07-01 01:41:20
  • How do I create definition lists in HTML using the , , and elements?
    How do I create definition lists in HTML using the , , and elements?
    Definition lists are created using, and elements, suitable for pairing terms and explanations. Structurally, wrap the overall content, define the terms, and provide description. A term can have multiple descriptions or multiple terms share the same description; application scenarios include vocabulary, metadata display and key-value pair information; it is not suitable for navigation menus, ordered steps, or text combinations without clear relationships; spacing, indentation and font styles can be added through CSS to improve readability.
    HTML Tutorial . Web Front-end 638 2025-07-01 01:41:01
  • Which HTML tags are deprecated or obsolete in HTML5?
    Which HTML tags are deprecated or obsolete in HTML5?
    HTML5 discards multiple old tags and recommends modern alternatives. 1., , etc. tags have been replaced by CSS; 2., , etc., are replaced by more modern technologies; 3. Some tags such as , are still available but are not recommended; 4. HTML5 emphasizes semantic tags, promotes the separation of content and styles, and improves accessibility and code consistency.
    HTML Tutorial . Web Front-end 913 2025-07-01 01:40:31
  • Which HTML tags are used to create a form?
    Which HTML tags are used to create a form?
    To create an HTML form, there are 5 main tags, namely,,,, and. 1. It is a form container, responsible for organizing and submitting data. Common properties include action, method and enctype; 2. Define multiple input types such as text, password, email, radio, checkbox and submit through type attributes; 3. Used to enter multiple text lines; 4. Used to create a drop-down selection menu in conjunction with creating a drop-down selection menu; 5. Used to submit or trigger interactive behavior, and combine it to improve accessibility and user experience. Master these tags and corresponding attributes to build a complete web form.
    HTML Tutorial . Web Front-end 925 2025-07-01 01:40:11
  • Advanced mysql tutorial on stored procedures
    Advanced mysql tutorial on stored procedures
    Stored procedures improve performance and reduce network traffic by encapsulating database logic. The process of creating parameters requires CREATEPROCEDURE and pay attention to the separator settings, such as using IN, OUT or INOUT to define the parameter orientation. Pass parameter values ??using CALL statements when calling. Variables can be declared in the process and combined with conditional judgments (such as IF or CASE) to implement complex logic to centrally process business rules. Error handling can trigger custom exceptions through SIGNAL. It is recommended to use logs, segment-by-stage testing and SHOWWARNINGS to assist debugging. After mastering these techniques, you can effectively simplify application code and enhance database control capabilities.
    Mysql Tutorial . Database 374 2025-07-01 01:39:51
  • How to add the MySQL bin directory to the system PATH
    How to add the MySQL bin directory to the system PATH
    To add MySQL's bin directory to the system PATH, it needs to be configured according to the different operating systems. 1. Windows system: Find the bin folder in the MySQL installation directory (the default path is usually C:\ProgramFiles\MySQL\MySQLServerX.X\bin), right-click "This Computer" → "Properties" → "Advanced System Settings" → "Environment Variables", select Path in "System Variables" and edit it, add the MySQLbin path, save it and restart the command prompt and enter mysql--version verification; 2.macOS and Linux systems: Bash users edit ~/.bashrc or ~/.bash_
    Mysql Tutorial . Database 490 2025-07-01 01:39:30
  • What are the integrity and crossorigin html attributes used for when loading scripts or styles from a CDN?
    What are the integrity and crossorigin html attributes used for when loading scripts or styles from a CDN?
    Theintegrityattributeensuresaresourcehasn’tbeenmodifiedbyusingacryptographichash,whilecrossoriginhandlescross-originrequeststoenablepropervalidation.1.Integritychecksthefile’sauthenticityviaSHA-256,SHA-384,orSHA-512hashes,blockingmaliciousorcorrupted
    HTML Tutorial . Web Front-end 688 2025-07-01 01:39:12
  • Can I install MySQL without using the installer
    Can I install MySQL without using the installer
    Yes, you can install MySQL without using the standard installer. You can implement it by downloading and decompressing ZIP files (Windows), using package manager (Linux), or manually compiling from source code (advanced users); each method requires manual configuration settings, including configuration files, data directory initialization and service settings.
    Mysql Tutorial . Database 378 2025-07-01 01:38:31
  • mysql tutorial building a simple login system
    mysql tutorial building a simple login system
    The core of the implementation of the login system includes four key points: database design, user input processing, password security and login status maintenance. First, the database design needs to create a user table containing fields such as id, username, email, password hashing and registration time, and ensure that the username and email address are unique; second, when verifying user information, preprocessing statements should be used to query the database to compare the hash passwords entered and stored by the user; third, the protection password must be encrypted using strong hash algorithms such as bcrypt or Argon2 to avoid plaintext storage; finally, the login status can be maintained through Session or Token (such as JWT). The former is suitable for small and medium-sized projects, and the latter is more suitable for front-end and back-end separation scenarios, and pay attention to setting security attributes to prevent attacks.
    Mysql Tutorial . Database 789 2025-07-01 01:38:11
  • How do browsers' default styles affect HTML tags?
    How do browsers' default styles affect HTML tags?
    The browser provides default styles for HTML elements to ensure basic readability and structure so that web pages without CSS are still in basic format. The default styles include title size, paragraph spacing, link color, etc., to help users identify content hierarchy and functions. Common elements such as titles, paragraphs, lists, and links are affected by the default style and may cause design interference. Developers can control the default style through CSSReset, Normalize.css or custom basic styles. Different methods have their own advantages and disadvantages and are suitable for different project requirements. Modern frameworks such as Tailwind or Bootstrap often have built-in style reset or standardization features, reducing manual processing steps.
    HTML Tutorial . Web Front-end 660 2025-07-01 01:37:51
  • What is the purpose of the element?
    What is the purpose of the element?
    The function is to display structured two-dimensional data, such as score sheets, timetables, etc.; it is not used for page layout. The correct way to use it includes: 1. wrap the entire table with it; 2. define the table header; 3. contain the main content; 4. represent a row; 5. or define a cell. Auxiliary tags include: add title; define column attributes; display the bottom summary information. Notes: Avoid complex structures, reduce the number of columns to improve the mobile experience, and use a responsive framework to optimize the display effect.
    HTML Tutorial . Web Front-end 512 2025-07-01 01:37:32
  • What are the core differences between the InnoDB and MyISAM storage engines?
    What are the core differences between the InnoDB and MyISAM storage engines?
    InnoDB is suitable for scenarios where transaction support is required, high concurrent writes and data consistency is suitable for simple queries that mainly focus on reads and require no transactions. 1.InnoDB supports transaction and ACID characteristics to ensure the atomicity and consistency of operations; MyISAM does not support transactions, and errors may lead to data inconsistency. 2. InnoDB uses row-level locks to improve concurrency performance; MyISAM uses table-level locks, frequent writing can easily cause performance bottlenecks. 3. InnoDB supports foreign key constraints to ensure the integrity of relationships between tables; MyISAM does not support foreign keys. 4.InnoDB has a crash recovery mechanism; MyISAM needs to be repaired manually. 5. Both support full-text indexing, but MyISAM's simplicity of static data in small scale
    Mysql Tutorial . Database 363 2025-07-01 01:37:11
  • mysql tutorial for Windows 10 installation
    mysql tutorial for Windows 10 installation
    The key steps to install MySQL on Windows 10 include: 1. Download the MySQL installation package suitable for Windows. It is recommended to select MySQLInstaller for Windows; 2. Use a custom installation method to check MySQLServer, MySQLConnector/C or Python and MySQLWorkbench; 3. Set the root user password and save it; 4. Add the bin directory of MySQL to the system environment variables for use on the command line; 5. After the installation is completed, connect to the database through the command line or MySQLWorkbench. There will be no problems following these steps, and the service startup failure will occur.
    Mysql Tutorial . Database 260 2025-07-01 01:36:51
  • How to install MySQL on CentOS 9
    How to install MySQL on CentOS 9
    The key steps to install MySQL on CentOS9 include adding an official YUM source, installing a MySQL server, starting and enabling services, performing secure initialization, and configuring a firewall. First, use dnfinstallhttps://dev.mysql.com/get/mysql80-community-release-el9-7.noarch.rpm to add the official source; secondly, run dnfinstallmysql-server to install MySQL; then, start the service through systemctlstartmysqld and systemctlenablemysqld and set up the power-on self-start;
    Mysql Tutorial . Database 292 2025-07-01 01:35:01

Tool Recommendations

jQuery enterprise message form contact code

jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29

HTML5 MP3 music box playback effects

HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.

HTML5 cool particle animation navigation menu special effects

HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29

jQuery visual form drag and drop editing code

jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29

Organic fruit and vegetable supplier web template Bootstrap5

An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03

Bootstrap3 multifunctional data information background management responsive web page template-Novus

Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02

Real estate resource service platform web page template Bootstrap5

Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02

Simple resume information web template Bootstrap4

Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02

Cute summer elements vector material (EPS PNG)

This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09

Four red 2023 graduation badges vector material (AI EPS PNG)

This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29

Singing bird and cart filled with flowers design spring banner vector material (AI EPS)

This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29

Golden graduation cap vector material (EPS PNG)

This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27

Home Decor Cleaning and Repair Service Company Website Template

Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09

Fresh color personal resume guide page template

Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29

Designer Creative Job Resume Web Template

Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28

Modern engineering construction company website template

The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28