In MySQL, you can use the INSERT statement to add a record number to the database. The INSERT statement has two formats: 1. "INSERT INTO table name [column name 1,...column name n] VALUES (value 1..., Value n);", you can insert a row of all column data into the table; 2. "INSERT INTO table name SET column name 1=value 1, column name 2=value 2,...;", you can insert a row of partial columns into the table data.
The operating environment of this tutorial: windows7 system, mysql8 version, Dell G3 computer.
In MySQL, you can use the INSERT statement to insert one or more rows of records into an existing table in the database.
The INSERT statement has two grammatical forms, namely the INSERT…VALUES statement and the INSERT…SET statement.
Method 1: Use the INSERT...VALUES statement to increase the number of records
The syntax format is:
INSERT INTO <表名> [ <列名1> [ , … <列名n>] ] VALUES (值1) [… , (值n) ];
The syntax is as follows:
: Specify the name of the table to be operated on.
: Specify the column name into which data needs to be inserted. If data is inserted into all columns in the table, all column names can be omitted, and INSERT VALUES(…) can be used directly.
VALUES or VALUE clause: This clause contains the list of data to be inserted. The order of data in the data list should correspond to the order of columns.
Example:
Create a course information table tb_courses in the test_db database, including course number course_id, course name course_name, course credits course_grade and Course notes course_info
CREATE TABLE tb_courses( course_id INT NOT NULL AUTO_INCREMENT, course_name CHAR(40) NOT NULL, course_grade FLOAT NOT NULL, course_info CHAR(100) NULL, PRIMARY KEY(course_id) );
View the data of the tb_courses table
SELECT * FROM tb_courses;
##Insert a new record in the tb_courses table, course_id The value is 1, the course_name value is "Network", the course_grade value is 3, and the info value is "Computer Network".INSERT INTO tb_courses(course_id,course_name,course_grade,course_info) VALUES(1,'Network',3,'Computer Network');
After inserting, you can see that the inserted record is successful when querying the data
. When inserting data, all fields of the tb_courses table are specified, so new values ??will be inserted for each field.Method 2: Use the INSERT...SET statement to increase the number of records
The syntax format is:INSERT INTO <表名> SET <列名1> = <值1>, <列名2> = <值2>, …This statement is used to directly specify corresponding column values ??for certain columns in the table, that is, the column name of the data to be inserted is specified in the SET clause, col_name is the specified column name, and the equal sign is followed by the specified data. , and for unspecified columns, the column value is assigned the default value for that column.Example:
Insert a new record in the tb_courses table, the course_id value is 2, the course_name value is "Database", the course_grade value is 3, and the info value is " MySQL".INSERT INTO tb_courses SET course_name = 'Database', course_info = 'MySQL', course_id = 2, course_grade = 3;After inserting, you can see that the inserted record is successful when querying the data
.Instructions:
Two forms of INSERT statement:- Use INSERT The …VALUES statement can insert one row of data or multiple rows of data into the table;
- The INSERT…SET statement can be used to specify the value of each column in the inserted row, or to specify some columns. The value;
- The INSERT...SET statement can be used to insert the values ??of some columns into the table. This method is more flexible;
- INSERT ...VALUES statement can insert multiple pieces of data at one time.
【Related recommendations: mysql video tutorial】
The above is the detailed content of How to increase the number of records in mysql. For more information, please follow other related articles on the PHP Chinese website!
Statement of this WebsiteThe 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
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Grass Wonder Build Guide | Uma Musume Pretty Derby3 weeks ago By Jack chenRoblox: 99 Nights In The Forest - All Badges And How To Unlock Them3 weeks ago By DDDUma Musume Pretty Derby Banner Schedule (July 2025)4 weeks ago By Jack chenToday's Connections hint and answer 3rd July for 7531 months ago By Jack chenWindows Security is blank or not showing options4 weeks ago By 下次還敢
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
See all articles
How to use PHP to develop a Q&A community platform Detailed explanation of PHP interactive community monetization model
Jul 23, 2025 pm 07:21 PM
1. The first choice for the Laravel MySQL Vue/React combination in the PHP development question and answer community is the first choice for Laravel MySQL Vue/React combination, due to its maturity in the ecosystem and high development efficiency; 2. High performance requires dependence on cache (Redis), database optimization, CDN and asynchronous queues; 3. Security must be done with input filtering, CSRF protection, HTTPS, password encryption and permission control; 4. Money optional advertising, member subscription, rewards, commissions, knowledge payment and other models, the core is to match community tone and user needs.
How to set environment variables in PHP environment Description of adding PHP running environment variables
Jul 25, 2025 pm 08:33 PM
There are three main ways to set environment variables in PHP: 1. Global configuration through php.ini; 2. Passed through a web server (such as SetEnv of Apache or fastcgi_param of Nginx); 3. Use putenv() function in PHP scripts. Among them, php.ini is suitable for global and infrequently changing configurations, web server configuration is suitable for scenarios that need to be isolated, and putenv() is suitable for temporary variables. Persistence policies include configuration files (such as php.ini or web server configuration), .env files are loaded with dotenv library, and dynamic injection of variables in CI/CD processes. Security management sensitive information should be avoided hard-coded, and it is recommended to use.en
Automating MySQL Deployments with Infrastructure as Code
Jul 20, 2025 am 01:49 AM
To achieve MySQL deployment automation, the key is to use Terraform to define resources, Ansible management configuration, Git for version control, and strengthen security and permission management. 1. Use Terraform to define MySQL instances, such as the version, type, access control and other resource attributes of AWSRDS; 2. Use AnsiblePlaybook to realize detailed configurations such as database user creation, permission settings, etc.; 3. All configuration files are included in Git management, support change tracking and collaborative development; 4. Avoid hard-coded sensitive information, use Vault or AnsibleVault to manage passwords, and set access control and minimum permission principles.
How to use PHP to develop product recommendation module PHP recommendation algorithm and user behavior analysis
Jul 23, 2025 pm 07:00 PM
To collect user behavior data, you need to record browsing, search, purchase and other information into the database through PHP, and clean and analyze it to explore interest preferences; 2. The selection of recommendation algorithms should be determined based on data characteristics: based on content, collaborative filtering, rules or mixed recommendations; 3. Collaborative filtering can be implemented in PHP to calculate user cosine similarity, select K nearest neighbors, weighted prediction scores and recommend high-scoring products; 4. Performance evaluation uses accuracy, recall, F1 value and CTR, conversion rate and verify the effect through A/B tests; 5. Cold start problems can be alleviated through product attributes, user registration information, popular recommendations and expert evaluations; 6. Performance optimization methods include cached recommendation results, asynchronous processing, distributed computing and SQL query optimization, thereby improving recommendation efficiency and user experience.
How to build an online customer service robot with PHP. PHP intelligent customer service implementation technology
Jul 25, 2025 pm 06:57 PM
PHP plays the role of connector and brain center in intelligent customer service, responsible for connecting front-end input, database storage and external AI services; 2. When implementing it, it is necessary to build a multi-layer architecture: the front-end receives user messages, the PHP back-end preprocesses and routes requests, first matches the local knowledge base, and misses, call external AI services such as OpenAI or Dialogflow to obtain intelligent reply; 3. Session management is written to MySQL and other databases by PHP to ensure context continuity; 4. Integrated AI services need to use Guzzle to send HTTP requests, safely store APIKeys, and do a good job of error handling and response analysis; 5. Database design must include sessions, messages, knowledge bases, and user tables, reasonably build indexes, ensure security and performance, and support robot memory
mysql revoke privileges from user
Jul 16, 2025 am 03:56 AM
To recycle MySQL user permissions using REVOKE, you need to specify the permission type, database, and user by format. 1. Use REVOKEALLPRIVILEGES, GRANTOPTIONFROM'username'@'hostname'; 2. Use REVOKEALLPRIVILEGESONmydb.FROM'username'@'hostname'; 3. Use REVOKEALLPRIVILEGESONmydb.FROM'username'@'hostname'; 3. Use REVOKE permission type ON.*FROM'username'@'hostname'; Note that after execution, it is recommended to refresh the permissions. The scope of the permissions must be consistent with the authorization time, and non-existent permissions cannot be recycled.
How to develop AI intelligent form system with PHP PHP intelligent form design and analysis
Jul 25, 2025 pm 05:54 PM
When choosing a suitable PHP framework, you need to consider comprehensively according to project needs: Laravel is suitable for rapid development and provides EloquentORM and Blade template engines, which are convenient for database operation and dynamic form rendering; Symfony is more flexible and suitable for complex systems; CodeIgniter is lightweight and suitable for simple applications with high performance requirements. 2. To ensure the accuracy of AI models, we need to start with high-quality data training, reasonable selection of evaluation indicators (such as accuracy, recall, F1 value), regular performance evaluation and model tuning, and ensure code quality through unit testing and integration testing, while continuously monitoring the input data to prevent data drift. 3. Many measures are required to protect user privacy: encrypt and store sensitive data (such as AES
Securing MySQL Connections with SSL/TLS Encryption
Jul 21, 2025 am 02:08 AM
Why do I need SSL/TLS encryption MySQL connection? Because unencrypted connections may cause sensitive data to be intercepted, enabling SSL/TLS can prevent man-in-the-middle attacks and meet compliance requirements; 2. How to configure SSL/TLS for MySQL? You need to generate a certificate and a private key, modify the configuration file to specify the ssl-ca, ssl-cert and ssl-key paths and restart the service; 3. How to force SSL when the client connects? Implemented by specifying REQUIRESSL or REQUIREX509 when creating a user; 4. Details that are easily overlooked in SSL configuration include certificate path permissions, certificate expiration issues, and client configuration requirements.
