I love the Raspberry Pi, and I love Percona server. The combination of the two can provide a nice home database. I have been running a Percona Server database since 2019 to hold all the weather information, that I collect from several of my Weather Stations.

I did a my first blog post on installing Percona Server 5.7 on the Raspberry Pi 3+.

You can read that blog post here: How to Build a Percona Server “Stack” on a Raspberry Pi 3+

Fast forward to 2022 and we now have the resources to build Percona Server 8.0 64-bit on the Raspberry Pi. In this post I will cover building and installing Percona Server 8.0.29 and Percona XtraBackup 8.0.29.

Prereqs:

1. Raspberry Pi 3B+, 4 or 400 (any memory size will work).
2. 128GB or 256GB microSD card. Of course you can go …

  Many FinTech companies and financial institutions have selected MySQL to build modern applications. The performance, ease of use, and customer support from the MySQL team are some of the many reasons why financial institutions and FinTech companies choose to use MySQL. Ecopaynet is a FinTech company based in Spain. Ecopaynet services include electronic payment […]

Ecopaynet's customer success story describes why they chose MySQL HeatWave over AWS to shorten their time to market and benefit from a better price-performance.

For a future article, I was again looking into the possibility of using sysbench to generate data and load on a MySQL database. However, I needed an SSL connection which only version 1.1.0 supports (see issue 308).

Alexey didn’t create a branch and/or release for the version 1.1.0. The code is the master branch.

As you know, I like to install software using the Operating System’s packaging and so I created a rpm for sysbench 1.1.0.

If you are also interested to use this version, here are the rpms for some popular OS and architecture (including Arm):

sysbench-1.1.0-1.fc35.x86_64 …

This 20th issue of the OpenLampTech newsletter marks 5 continuous months of weekly publishing. Thank you, the readers, for making it possible and continuing to read these newsletters. Once again, this week’s issue has plenty of PHP/MySQL content so enjoy the 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.

This week’s OpenLampTech newsletter issue has plenty to read for everyone as I am loading these newsletters up! We are looking at articles covering:

…

Saturday, I posted how to use Microsoft ODBC DSN to connect to MySQL. Somebody didn’t like the fact that the PowerShell program failed to write a *.csv file to disk because the program used the Write-Host command to write to the content of the query to the console.

I thought that approach was a better as an example. However, it appears that it wasn’t because not everybody knows simple redirection. The original program can transfer the console output to a file, like:

powershell .\MySQLODBC.ps1 > output.csv

So, the first thing you need to do is add a parameter list, like:

param (
  [Parameter(Mandatory)][string]$fileName
)

Anyway, it’s trivial to demonstrate how to modify the PowerShell program to write to a disk. You should also create a virtual PowerShell drive before writing the file. That’s because you can change the physical directory anytime you want with minimal changes to rest of …

Nowadays everything is getting digitalized and migration toward the cloud is at its peak. There is a high chance of data leaks if we don’t tighten the security of the Database servers. It is mandatory to secure the database by restricting access to Database. Although we have restricted the access. We need to monitor the activity of the user to prevent the unwanted usage of data.

Security will be split into three layers

1. Network-level security.
2. OS level security.
3. Database level security.

OS level security will be handled by the AWS team. Since It is managed by the AWS Team. So all the security patching, minor version upgrades of OS, and kernel tuning will be governed by the AWS infra team.

Network-level security and database-level security are owned by the end user.

This post explains and demonstrates how to install, configure, and use the MySQL’s ODBC libraries and a DSN (Data Source Name) to connect your Microsoft PowerShell programs to a locally or remotely installed MySQL database. After you’ve installed the MySQL ODBC library, use Windows search field to find the ODBC Data Sources dialog and run it as administrator.

There are four steps to setup, test, and save your ODBC Data Source Name (DSN) for MySQL. You can click on the images on the right to launch them in a more readable format or simply read the instructions.

MySQL ODBC Setup Steps

1. Click the SystemDSN tab to see he view which is …

If you have worked with an RDBMS for some time, you will likely have come across the statement SELECT 1.

However, rarely is it correctly explained to engineers what the origin of SELECT 1 is, and why it’s useless and wasteful? A google search is not going to give you the response you would hope, these ranked responses are just as useless as the statement itself.

Bloat

Seeing a SELECT 1 confirms two things. First you are using a generic ORM framework, quote, and second, you have never optimized your SQL traffic patterns.

“Frameworks generally suck.
They CLAIM to improve the speed of development and abstract the need to know SQL.
The REALITY is the undocumented cost to sub-optimal performance, especially with data persistence.”

Connection Pooling

SELECT 1 comes from …

A student wanted a better example of writing a MySQL Persistent Stored Module (PSM) that maintains transactional scope across a couple tables. Here’s the one I wrote about ten years ago to build the MySQL Video Store model. It looks I neglected to put it out there before, so here it is for reference.

-- Conditionally drop procedure if it exists.
DROP PROCEDURE IF EXISTS contact_insert;

-- Reset the delimiter so that a semicolon can be used as a statement and block terminator.
DELIMITER $$

SELECT 'CREATE PROCEDURE contact_insert' AS "Statement";
CREATE PROCEDURE contact_insert
( pv_member_type         CHAR(12)
, pv_account_number      CHAR(19)
, pv_credit_card_number  CHAR(19)
, pv_credit_card_type    CHAR(12)
, pv_first_name          CHAR(20)
, pv_middle_name         CHAR(20)
, pv_last_name           CHAR(20)
, pv_contact_type        CHAR(12)
, pv_address_type        CHAR(12)
, pv_city                CHAR(30)
, pv_state_province      CHAR(30)
, …