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Databases / MySQL

MySQL

1.2K+ posts

MySQL AFTER DELETE Trigger

Last Updated: 05 August 2024

In MySQL, triggers are a concept where SQL developers can define automatic actions to occur in response to specific changes in a database table. An AFTER DELETE trigger, f...read more

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MySQL After Insert Trigger

Last Updated: 02 August 2024

An "AFTER INSERT" trigger in MySQL automatically executes specified actions after a new row is inserted into a table. It is used to perform tasks such as updating related ...read more

MySQL Show Trigger

Last Updated: 07 August 2024

SHOW TRIGGERS is the MySQL way of showing all the registered database triggers for a given database. Triggers are special kinds of rules that perform predefined actions on...read more

Last Updated: 14 May 2025

MySQL JOIN is a fundamental feature that combines rows from two or more tables based on a related column between them. It allows for efficient data retrieval by enabling t...read more

MySQL Before Insert Trigger

Last Updated: 05 August 2024

MySQL BEFORE INSERT triggers are essential tools for maintaining data quality and enforcing business rules at the database level. These triggers automatically execute a se...read more

Foreign Key with a Null Value in MySQL

Last Updated: 07 August 2024

In databases, foreign keys are like links connecting two tables. They make sure that data in one table matches data in another. But a common question is whether a foreign ...read more

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MySQL BEFORE DELETE Trigger

Last Updated: 07 August 2024

MySQL BEFORE DELETE trigger is a powerful tool that automatically performs specific actions before an DELETE operation is executed on a table. This feature allows us to ha...read more

Last Updated: 05 August 2024

A MySQL cursor is a powerful database object designed for retrieving, processing, and managing rows from a result set one at a time. Unlike standard SQL queries that handl...read more

How To Build Node.js Authentication System With MySQL?

Last Updated: 21 August 2024

Node.js is an open-source server-side JavaScript runtime environment established to develop server-side applications. The first task can be an implementation of an authent...read more

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Web Technologies

When to Use "ON UPDATE CASCADE" in MySQL

Last Updated: 21 August 2024

In MySQL, the ON UPDATE CASCADE option in foreign key constraints indicates that anytime an update is made to a row in the parent table, matching rows in child tables are ...read more

MySQL Window Functions

Last Updated: 07 April 2025

MySQL Window Functions are advanced SQL capabilities that enable expensive calculations across sets of rows related to the current row. Aggregate functions collapse the re...read more

MySQL - CHECKSUM TABLE Statement

Last Updated: 15 April 2025

The CHECKSUM TABLE statement in MySQL is a useful tool to verify the integrity of tables and detect any changes or corruption in the data stored within them. This statemen...read more

DATETIME vs TIMESTAMP Data Type in MySQL?

Last Updated: 13 September 2024

When designing a database schema in MySQL, choosing the appropriate data type for storing date and time information is important. MySQL offers two primary data types for t...read more

MySQL DROP Trigger

Last Updated: 08 October 2024

In MySQL, triggers automatically perform actions when events like INSERT, UPDATE, or DELETE occur on a table However, there are situations where a trigger may not be neces...read more

Setting Up Gorm With MySQL

Last Updated: 04 November 2024

In this article, we’ll set up GORM, an ORM library, with MySQL using the Gin web framework in Go. GORM provides features that make database interactions easier by allowing...read more

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