MySQL NULL value transformation with COALESCE() – Medium repost

Being mindful of NULL values is a good practice. NULLs can slip up on you and give you a heck of a time (especially in calculations) if you aren’t careful. In this post, we will see examples of NULL transformation with the MySQL COALESCE() function.


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MySQL COALESCE() function accepts multiple arguments and returns the first non-NULL value. If there aren’t any non-NULLs, the COALESCE() returns NULL.


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Read the entire post, Transform NULL values with the MySQL COALESCE function to learn how to substitute NULL values for something more meaningful in query results.


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Josh Otwell has a passion to grow as a PHP Developer, SQL expert, and technical blogger/writer.

Disclaimer: The majority of examples in this post, are performed in a personal development/learning workstation environment and should not be considered production quality or ready. Your particular goals and needs may vary. Like always, just because you can do something doesn’t mean you should. My opinions are my own.

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The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

Disclosure: Some of this blog post’s services and product links are affiliate links. At no additional cost to you, should you make a purchase by clicking through one of them, I will receive a commission.

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