We will walk you through the process of connecting to SQL Server using Devart SDAC, including installation and examples of how to interact with the components.
The post How to Connect to SQL Server in Delphi with Devart SDAC appeared first on Devart Blog.
Long-time WordPress and Vue.js software engineer Przemysław Hernik shares a fantastic developer interview with the OpenLampTech readers.
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[Read more]We’ve seen in previous articles what Transparent Read/Write Splitting is with MySQL 8.2 and how to use it with MySQL Connector/Python.
I love this new feature, but I was wondering if it was really worth it.
Will the application benefit from offloading reads to another node, and won’t using the MySQL Router and parsing the request slow down connections?
These are the kinds of questions I’d like to cover and answer in this article.
The environment
To perform the test, I use the following environment:
In this article, we'll briefly review some advantages of SQL Azure, a Microsoft cloud-based SQL database service, and explore how to export and import data between Azure SQL and MySQL server using a universal ODBC driver for SQL Azure and a powerful MySQL tool - dbForge Studio for MySQL.
The post How to Import/Export MySQL Data to SQL Azure: Using ODBC Driver for Data Migration appeared first on Devart Blog.
52 + 52 = 104. A letter from Josh. OpenLampTech is a media and content source for PHP, MySQL, and the LAMP stack.
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.
Maybe you have guessed already. Or used your incredible math skills and surmised that OpenLampTech issue #104 is a historic event for me and this newsletter.
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More ways I can help
As you know, one of the most eagerly waited features was released with MySQL 8.2: the transparent read/write splitting.
In this post, we’ll look at how to use it with MySQL-Connector/Python.
Architecture
To play with our Python program, we will use an InnoDB Cluster.
This is an overview of the cluster in MySQL Shell:
JS > cluster.status()
{
"clusterName": "fred",
"defaultReplicaSet": {
"name": "default",
"primary": "127.0.0.1:3310",
"ssl": "REQUIRED",
"status": "OK",
"statusText": "Cluster is ONLINE and can tolerate up to ONE failure.",
"topology": {
"127.0.0.1:3310": {
"address": "127.0.0.1:3310",
"memberRole": "PRIMARY", …With the release of Percona XtraBackup 8.0.34-39, Percona XtraBackup (PXB) allows a backup on server version 8.0.35 and higher. We have removed the server version check because the MySQL 8.0 series has transitioned to bug fixes.A feature change in the MySQL 8.0 series, such as the redo log record structure, could cause PXB to fail […]
In last week’s OpenLampTech newsletter issue #103, we have several fantastic reads and many interesting stories to share. Thanks for reading.
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The Newsletter for PHP and MySQL Developers
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Be sure you’re subscribed to the OpenLampTech newsletter. Head over to the homepage and …
[Read more]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 …
[Read more]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.
