MySQL Shorts is a short-format video series dedicated to all things MySQL. Check out the latest video where we discuss how to use a CASE operator in a JOIN.

MySQL binlog | Laravel exception handling | WordPress plugin context | MySQL GUIs. OpenLampTech is a media and content source for MySQL, PHP, and the LAMP stack.

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GitHub Actions allows DevOps to handle automated deployments. IN this post we talk about how you can use GitHub Actions in conjunction with Knex.js to apply database changes as part of the CI/CD pipeline.

MySQL Shorts is a short-format video series dedicated to all things MySQL. This post is one in a series where we will count down the top 5 MySQL Shorts videos based on views.

You may have come across numerous presentations showcasing MySQL HeatWave as a Query Accelerator for MySQL. However, if you have not yet had the opportunity to test it yourself (if you have, you already know the answer), allow us to conduct a test using actual data to determine the potential benefits of utilizing a MySQL […]

In a previous post, I talked about how we can leverage GitHub Actions to automate running tests whenever a commit is made to a specific branch of a GitHub repository. In this post, we will discuss one way we can harness GitHub Actions to apply database migration scripts to a MySQL HeatWave Database Service instance running in Oracle Cloud Infrastructure (OCI). The […]

Freelance web developer Phil Kurth shares a fantastic developer interview with the OpenLampTech newsletter readers.

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.

Phil Kurth works with a wide range of clients and builds WordPress plugin extensions for the ever-popular Advanced Custom Fields plugin.

Phil has a lot of knowledge, insight, and experience in the web development industry so I’m very excited he agreed to share this information (and more) with the OpenLampTech newsletter readers.

And now without any further ado, on to the interview.

Which is faster: LIMIT 1 or LIMIT 20? Presumably, fetching less rows is faster than fetching more rows. But for 16 years (since 2007) the MySQL query optimizer has had a “bug”† that not only makes LIMIT 1 slower than LIMIT 20 but can also make the former a table scan, which tends to cause problems. This happened last week where I work, and although MySQL DBAs are familiar with this bug, I’m writing this blog post for developers to more clearly illustrate and explain what’s going on and why because it’s really counterintuitive.

Which is faster: LIMIT 1 or LIMIT 20? Presumably, fetching less rows is faster than fetching more rows. But for 16 years (since 2007) the MySQL query optimizer has had a “bug”† that not only makes LIMIT 1 slower than LIMIT 20 but can also make the former a table scan, which tends to cause problems. This happened last week where I work, and although MySQL DBAs are familiar with this bug, I’m writing this blog post for developers to more clearly illustrate and explain what’s going on and why because it’s really counterintuitive.

Which is faster: LIMIT 1 or LIMIT 20? Presumably, fetching less rows is faster than fetching more rows. But for 16 years (since 2007) the MySQL query optimizer has had a “bug”† that not only makes LIMIT 1 slower than LIMIT 20 but can also make the former a table scan, which tends to cause problems. This happened last week where I work, and although MySQL DBAs are familiar with this bug, I’m writing this blog post for developers to more clearly illustrate and explain what’s going on and why because it’s really counterintuitive.