MySQL – SubQuery Table of content The MySQL subquery, also known as an inner query or nested query, is a query inside another query. It allows you to retrieve data from one or more tables based on the results of another query. Subqueries can be used in various parts of SQL statements, including SELECT, INSERT, […]
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MySQL – SQL Injection Table of content The SQL Injection in MySQL is a harmful approach where an attacker inserts or “injects” harmful SQL code into a database query. This can be done through user inputs such as forms, URL parameters, or cookies. The attacker takes advantage of weaknesses in the software to steal information […]
MySQL – Handling Duplicates Table of content Tables or result sets in a database usually contain duplicate records. While duplicates are generally allowed, there are situations where it is necessary to prevent them. In such cases, it becomes essential to identify and remove duplicate records from a database table. Importance of Handling MySQL Duplicates There […]