Automate Record Creation Timestamp Storage in MySQL
MySQL offers the possibility of automatically recording the creation timestamp of new records, eliminating the need for manual entry. To achieve this, consider utilizing the DEFAULT constraint with the CURRENT_TIMESTAMP value.
Solution:
Utilize the DEFAULT constraint to initialize the column with the current timestamp:
CREATE TABLE ... your_timestamp_column TIMESTAMP DEFAULT CURRENT_TIMESTAMP ...
For an existing table, modify the column definition using the ALTER TABLE statement:
ALTER TABLE your_table ALTER COLUMN timestamp_column SET DEFAULT CURRENT_TIMESTAMP
By default, the column will be populated with the current date and time when an INSERT statement is executed, unless explicitly specified otherwise. Alternatively, you can specify NULL or the DEFAULT value to take advantage of the default constraint, assuming the column allows NULL values.
The above is the detailed content of How to Automate Record Creation Timestamp Storage in MySQL?. For more information, please follow other related articles on the PHP Chinese website!

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.

Article discusses using foreign keys to represent relationships in databases, focusing on best practices, data integrity, and common pitfalls to avoid.

The article discusses creating indexes on JSON columns in various databases like PostgreSQL, MySQL, and MongoDB to enhance query performance. It explains the syntax and benefits of indexing specific JSON paths, and lists supported database systems.

Article discusses securing MySQL against SQL injection and brute-force attacks using prepared statements, input validation, and strong password policies.(159 characters)


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Linux new version
SublimeText3 Linux latest version

WebStorm Mac version
Useful JavaScript development tools

Dreamweaver CS6
Visual web development tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

SublimeText3 Chinese version
Chinese version, very easy to use
