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In this article, we aim to explore different ways to rename columns in MySQL. ALTER TABLE The command is mainly used to change the format of a given MySQL table. It can be used to add columns, change the data type within a column, delete co...

This article provides several options to check if a table exists in MySQL. Before discussing it, let us first see what a table is in MySQL and when you need to check its existence. What is a table in MySQL? A table is a database object that...

This article highlights different ways to check if a row exists in a MySQL table. We will use the EXISTS and NOT EXISTS operators. We can also use these two operators with IF() the function to get a meaningful message if a row (a record) is...

Today I will show you how to truncate all tables in Mysql. It is used when you want to delete the entire table TRUNCATE TABLE . TRUNCATE It is a type of DML statement, which means it cannot be rolled back once it is committed. There are two...

In this article, we aim to explore different ways to create temporary tables in MySQL. One of the main features of temporary tables is that it helps in storing temporary data. This feature is enabled in MySQL 3.23 and later versions. These...

In this article, we aim to understand how to create a table from CSV in MySQL database. Businesses and organizations must quickly generate tables from large amounts of data. These organizations typically have large CSV files with large amou...

This article explains how to use MySQL to query from multiple tables in one script SELECT . Let's demonstrate a situation: SELECT name , price, details, type , FROM food, food_order WHERE breakfast.id = 'breakfast_id' Now, let's imagine FRO...

This quick tutorial will discuss backing up a MySQL database and saving it in a file as a script. When working with a database, it is recommended to back up the database regularly. This is because some problematic situations may arise durin...

Today, we will understand the difference between the WHERE and clauses in MySQL . We will understand these clauses individually with code examples and compare them in a tabular form to highlight the differences. HAVING In WHERE MySQL HAVING...

This article teaches you how to use MySQL VIEW and MERGE create table aliases. In both cases, changes in the original table are reflected in the alias table. Also, SELECT query results on the alias table and the original table will be the s...

In this article, we aim to explore how to check the current version of MySQL on macOS. Checking MySQL version in macOS When trying to figure out the version, you must follow these steps. Each time a person logs into the MySQL server, the ve...

In some cases, users want to update logically related tables at the same time. These logically related tables are linked to each other through some attributes. Advantages of updating multiple tables in one MySQL query Similar attributes in...

Today, we will enable MySQL in MySQL using MySQL shell on Windows and Ubuntu 20.04 slow_query_log . For this tutorial, we are using MySQL version 8.0 and Ubuntu 20.04. MySQL slow_query_log MySQL slow_query_log contains SQL statements that t...

In this article, we will learn how to group values ​​by month in MySQL database. Businesses and organizations have to find user or customer data based on purchase or usage trends over a few months. If a particular business achieves its...

This article aims to explore how to perform a full join or full outer join in MySQL. Full outer join is used to merge or combine the entire data from two separate tables. For example, suppose we have two tables named student_id and student_...