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This article highlights various ways to get a history of MySQL commands we have executed in Windows and Linux. MySQL Command History We will use Windows and Linux (Ubuntu 20.04) operating systems to understand different ways to get MySQL co...

In this article we will learn how to use FOREIGN_KEY_CHECKS in MySQL Workbench to temporarily turn off foreign key constraints in MySQL. Disable foreign key constraints in MySQL There are many situations where we temporarily turn off foreig...

This article explains how to change the max_allowed_packet size in MySQL server. To understand this, we will use two operating systems, Windows 10 and Linux (Ubuntu). Changing max_allowed_packet Size in MySQL Server If we try to upload a fi...

In this article we will understand the uses, advantages and alternatives of ZEROFILL attribute in MySQL. Use and benefits of the ZEROFILL attribute in MySQL The benefit of using the ZEROFILL attribute is that it has nothing to do with input...

In this article we will use the DATE() , CAST() , and CONVERT() functions to compare MySQL timestamp dates with only the date parameter. DATE() vs. CAST() vs. CONVERT() in MySQL Below is a brief description of each function. You can also fi...

We will use one or more columns to calculate percentages in MySQL. There are different ways to do this, and for each method we will use an example table. Calculate percentage using a column in MySQL We have a table called sales where ID, Re...

This article is about using MySQL query to get data from a specific table or relation that satisfies a specific condition. To do this, the WHERE clause is used in the SQL query. WHERE clause in SQL query WHERE The clause specifies the condi...

We are learning how to change the connection timeout in MySQL using Linux (Ubuntu 20.04) and Windows operating systems. Changing the connection timeout in MySQL Sometimes you keep losing connection to the MySQL server because the connect_ti...

This article describes possible causes and solutions for the MySQL error Data is truncated for a column . Fix data truncated due to column error in MySQL Here, we will discuss the possible causes and solutions to eliminate MySQL data trunca...

In this article, we will study about the Error! Error Server PID File Could Not Be Found! in MySQL and its solution with full explanation. MySQL PID file The file that contains the process identification number or process ID of a running My...

This article briefly introduces the PHP mysqli() function and demonstrates how to use it to get the last inserted ID from a MySQL database. PHP mysqli() Function It is an extended version of the MySQL driver called mysqli and is typically u...

This article introduces three ways to list all stored procedures in MySQL. They include the SHOW PROCEDURE STATUS statement, the data directory, and MySQL Workbench (a visual tool). List all stored procedures in MySQL We will use the data d...

This article will explain how to use mysqldump to back up only the data. Here we will explore the --no-create-info , --compact , , --skip-triggers and --no-create-db options. If you are planning to back up single or multiple databases and t...

This article explains how to update the primary key in a MySQL table. We will use the ALTER command to make any changes to the primary key. Update the primary key in a MySQL table We can update the primary key in a MySQL table in multiple s...

This article presents three alternative implementations that we can use as the equivalent of Oracle's decode() function in MySQL. To do this, we will use IF(), CASE, and a combination of FIELD() and ELT(). MySQL equivalent of Oracle's decod...