In last week’s OpenLampTech newsletter issue #103, we have several fantastic reads and many interesting stories to share. Thanks for reading.

Custom WooCommerce and Shopify Solutions

Discover useful WooCommerce and Shopify custom solutions for your online store today at affordable prices!

Learn More

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.

Be sure you’re subscribed to the OpenLampTech newsletter. Head over to the homepage and …

In Alan Beaulieu’s wonderful book Learning SQL: Generate, Manipulate, and Retrieve Data, he uses a SQL 1 to demonstrates a CROSS JOIN in MySQL counting from 1 to 100. My students always find it difficult to read because the subqueries take so much space it makes it difficult to see the process, for example he gives this SQL 1 solution:

SELECT ones.x + tens.x + 1 AS counter
FROM
 (SELECT 0 AS x UNION ALL
  SELECT 1 AS x UNION ALL
  SELECT 2 AS x UNION ALL
  SELECT 3 AS x UNION ALL
  SELECT 4 AS x UNION ALL
  SELECT 5 AS x UNION ALL
  SELECT 6 AS x UNION ALL
  SELECT 7 AS x UNION ALL
  SELECT 8 AS x UNION ALL
  SELECT 9 AS x ) ones CROSS JOIN
 (SELECT 0 AS x UNION ALL
  SELECT 10 AS x UNION ALL
  SELECT 20 AS x UNION ALL
  SELECT 30 AS x UNION ALL
  SELECT 40 AS x UNION ALL
  SELECT 50 AS x UNION ALL
  SELECT 60 AS x UNION ALL
  SELECT 70 AS x UNION ALL
  SELECT 80 AS x UNION ALL
  SELECT 90 AS x ) tens
ORDER BY counter;

While anybody with a …

In this blog, we will take a look at how MySQL HeatWave Lakehouse works with some of the popular file formats like Parquet and Avro. MySQL HeatWave Lakehouse enables querying data in the object storage stored in a variety of file formats, such as CSV, Parquet, and Avro. Most databases also support exporting their data […]

In this blog, we will take a look at how MySQL HeatWave Lakehouse works with some of the popular file formats like Parquet and Avro.

Vitess 18 is now Generally Available, with a number of new enhancements designed to improve usability, performance and MySQL compatibility. MySQL Compatibility Improvements # Foreign Keys # In the past, foreign keys had to be managed outside Vitess. This was a significant blocker for adoption. We are now able to support Vitess-managed foreign keys within the same shard. This includes the ability to import data into Vitess from an existing MySQL database with foreign keys.

Oracle recently made their quarterly releases with MySQL 8.0.35 and MySQL 8.2. This blog post is a quick look at the release notes to see what these new versions bring to the community. You’ll want to keep an eye on the deprecations in particular because some long-accepted behavior, including wildcards, will change eventually.We get 83 […]

Using pt-online-schema or gh-ost? Of course you are; everyone in the MySQL industry does. But now there’s a new online schema change tool that will obsolete these two: Spirit by renowned MySQL expert Morgan Tocker.

Using pt-online-schema or gh-ost? Of course you are; everyone in the MySQL industry does. But now there’s a new online schema change tool that will obsolete these two: Spirit by renowned MySQL expert Morgan Tocker.

Using pt-online-schema or gh-ost? Of course you are; everyone in the MySQL industry does. But now there’s a new online schema change tool that will obsolete these two: Spirit by renowned MySQL expert Morgan Tocker.

During last Ubuntu Summit in Riga, I got an interesting question from Alex Lutay, engineering manager at Canonical regarding the different ways to perform some Admin API commands in MySQL Shell.

He wanted to know why, in the manual and blogs, we always use separate commands instead of combining them, as he would expect this to have an impact on the connections established with the server.

Let’s illustrate this by looking at the different ways of obtaining the state of a cluster. Here are the four different methods:

Method 1

This is the method most frequently used in the documentation:

$ mysqlsh admin@10.0.0.1
JS> cluster=dba.getCluster()
JS> cluster.status() 

Method 2

This is Alex’s preferred method as he expects to have less round trips with the network:

$ …