MySQL configuration variables are a set of server system variables used to configure the operation and behavior of the server. In this blog post, we will explain the differences in managing the configuration variables between MySQL 5.7 and MySQL 8.0. We will explain three different ways for setting the configuration variables based on your use-case. […]

This tutorial explains how to create a user with password in MySQL. We’ll use the MySQL Create User command and describe it with the help of examples. By using this command, you can introduce a new user and grant him/her the required permissions or rights. Usually, you might be using the root user to access […]

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This tutorial explains how to use the MySQL CURRENT_TIMESTAMP() function with the help of examples. By using it, you can convert or display the current date and time. The output format is either ‘YYYY-MM-DD HH:MM: SS’ format or YYYYMMDDHHMMSS, which depends on the context of the calling function, whether it is numeric or string. The […]

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This tutorial explains how you can grant privileges on a database in MySQL. It will introduce you all the steps beginning from connecting to MySQL and then accessing the MySQL commands to set the desired level of privileges. So, if you wish to grant or update the privileges in MySQL, first you should connect to […]

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This tutorial explains how to use the MySQL FROM_UNIXTIME() function with the help of examples. By using it, you can convert or display a UNIX_TIMESTAMP value to a timestamp. The output format is either YYYY-MM-DD-HH-MM-SS or YYYYMMDDHHMMSS, which depends on the calling context of the function. It means that FROM_UNIXTIME() would return a string for […]

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This tutorial explains about MySQL UPSERT command with the help of simple examples. An upsert is a smart operation which turns into INSERT or UPDATE whichever is applicable. Also, it is an atomic transaction, means complete in a single step. Let’s understand – If a record is new, then UPSERT triggers an INSERT. But, if […]

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This tutorial explains about MySQL DATE data type and walks you through some of the standard date functions. It will help you use and handle dates more efficiently with MySQL. MySQL DATE is a temporal data type for accessing and setting dates by applications. It accepts DATE values only in YYYY-MM-DD format. And MySQL doesn’t […]

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This tutorial explains MySQL LOWER()/LCASE() functions which convert the upper case characters of a string to the LOWER case. We’ll describe the functioning of this method with the help of simple examples. 1. LOWER()/LCASE() Syntax 2. LOWER()/LCASE() to convert text to lower case 3. LOWER()/LCASE() on table data 4. LOWER()/LCASE() on binary text Let’s now […]

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This tutorial explains MySQL UPPER()/UCASE() functions which convert the lower case characters of a string to upper case. We’ll describe the functioning of this method with the help of simple examples. 1. UPPER()/UCASE() Syntax 2. UPPER()/UCASE() to convert text to upper case 3. UPPER()/UCASE() on table data 4. UPPER()/UCASE() on binary text Let’s now go through each of the section one by one. MySQL UPPER()/UCASE() Functions As stated initially, UPPER() is a built-in MySQL function which changes a string value to upper case. So, let’s now see the details and check out how can we use it. Syntax Below is

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This tutorial explains MySQL ORDER BY clause and its usage with both the ASC and DESC options. We’ll describe this MySQL statement with the help of simple examples. 1. ORDER BY Clause Syntax 2. ORDER BY W/O ASC or DESC 3. ORDER BY DESC 4. ORDER BY Relative Position 5. ORDER BY Two Fields ASC & DESC Let’s now go through each of the section one by one. MySQL ORDER BY Clause The MySQL SELECT command doesn’t return a sorted result set by default. Hence, to sort the output, you have to append the ORDER BY clause in the SELECT

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