MySQL

The Problem The MySQL error ‘You can’t specify target table for update in FROM clause’ occurs when the same table is being used for both reading (SELECT) and writing (UPDATE), within a subquery. This is because MySQL......

Introduction String interpolation in SQL queries allows you to dynamically insert values or variables into a string literal within your query. It is an important concept for developing flexible and dynamic SQL applications. In MySQL 8,......

Introduction Naming conventions are a critical aspect of database design. They improve readability, maintenance, and the consistency of your database schema. This tutorial dives into the best practices for naming tables and columns in......

Introduction Working with dates is a common scenario in software development. Whether you’re building a reservation system, an events calendar, or a report with a date range, you will eventually need to generate a list of dates......

Introduction Understanding how to properly store and manipulate geographical data within a database is an essential skill for a wide range of applications, from social media apps to logistics software. The purpose of this tutorial is......

Introduction Understanding the physical distance between two geographic points, characterized by their latitude and longitude coordinates, has numerous practical applications in fields such as logistics, travel, and geospatial......

Introduction Working with databases often involves importing data from various file formats. Comma Separated Values (CSV) is a widely-used data format due to its simplicity and compatibility with numerous applications. In this......

The Problem Encountering errors in MySQL can be a daunting experience, especially for newcomers to SQL. One common error that users come across is ‘Every derived table must have its own alias’. In this post, we’ll......

Understanding the Error The MySQL Error 1045 is a common issue that beginner and experienced database administrators alike may encounter. This error signifies that there is a problem with the authentication process for MySQL.......

Introduction When working with MySQL, it’s not uncommon to encounter the error: Error 1093: Can't specify target table for update in FROM clause. This error can be perplexing, especially to those who are new to SQL. The error......

Introduction MySQL 8 has introduced many improvements and rigor in the ways it handles character representation, which includes full support for UTF-8 encoding. While this is generally beneficial, it can lead to issues when the......