Recently, while doing a test process to examine resource usage and the time required to alter the table using pt-osc, it leads to a loss of triggers even though the –preserve-triggers option is specified. I made the decision to recreate the identical circumstance so that everyone could see it.

Test environment : 

OS: Amazon Linux 2

MySQL version: 5.7.40

pt-online-schema-change version: 3.1.0

Before digging deeper, we must first obtain the whole picture. Here is an illustration of the table’s structure.

Table structure:

In MySQL, the ORDER BY clause is used to sort the records fetched by the SELECT statement, in ascending or descending order. And while the usage of this command is simple in basic cases, there are more complex scenarios requiring much more attention. This article will explore the essence, the syntax, and the usage scenarios […]

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MySQL variables store data, label data, and let developers create more accurate and efficient code by turning long and complicated strings of characters into one simple variable. This article will explore user-defined variables. User-defined variables let us execute various data sets with one command and use this data whenever needed. Mastering variables in MySQL is […]

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MySQL 8.0.30 was released on 26-07-2022. It has a good list of features.

• Generated Invisible Primary Key
• Dynamic Redo log Sizing
• Instruments to monitor group replication memory
• Support for Ubuntu 22.04

A most notable feature for Database Administrators and database reliability engineers is Dynamic redo logging.

The more widely adopted open-source backup tool is Xtrabackup. The change in the redo log design has affected this hot backup tool.

2022-10-04T18:40:08.211998+05:30 0 [Note] [MY-011825] [Xtrabackup] recognized server arguments: --datadir=/var/lib/mysql 
2022-10-04T18:40:08.212264+05:30 0 [Note] [MY-011825] [Xtrabackup] recognized client arguments: …

In the previous blog, we have gone through the Basic operation of the Skeema tool. In this blog, we will see the production use case of the Skeema tool.

1. Selective schema setup :
2. All (Global) servers :
3. Selective server execution:
4. …

Mydumper supports streaming of backups right from version 0.11.3 and the latest version Mydumper 0.12.3 it enabled its support for compressed streaming backup. This was the most awaited feature added to Mydumper, making it a more powerful tool for data migration to RDS or Cloud.

If you are hearing mydumper for the first time, then let’s have a quick catch-up on what Mydumper is and what it does exactly.

Mydumper is a multithread logical backup and restores tool for MySQL and its forks. To know more you can refer to our previous blogs/presentations below.

• https://mydbops.wordpress.com/2016/01/31/faster-logical-backup-with-mydumper/
• …

Es gibt zwei Arten, wie man Tabellen in MySQL-Datenbanken erstellen kann: Ausführen einer Abfrage, die einen CREATE TABLE-Befehl enthält Nutzung der entsprechenden Funktionen von MySQL-bezogenen Tools und IDEs Der erste Ansatz ist hilfreich, wenn Sie Tabellen speziell über ein Skript erstellen müssen. Wenn Sie z.B. eine Tabelle zu einem ganz bestimmten Zeitpunkt erstellen möchten, es […]

The post Erstellen von Tabellen mit dem MySQL CREATE TABLE-Befehl in dbForge Studio for MySQL appeared first on Devart Blog.

Creating tables is perhaps the most popular task in database development. In this article, we will review the ways of creating MySQL tables. There are two main ways of creating tables in MySQL databases: Executing a query that includes the CREATE TABLE statement Using the corresponding functionality of MySQL-related tools and IDEs The first approach […]

The post How to Create a Table in MySQL appeared first on Devart Blog.

The MySQL CONCAT function is widely used to concatenate multiple column values into a single column. In this article, we will look into the MySQL CONCAT() syntax, demonstrate to you how to use it, and explore the differences between CONCAT and CONCAT_WS. Contents What is concatenation? MySQL CONCAT() syntax MySQL CONCAT examples Select and concatenate […]

The post MySQL CONCAT Function: How to Concatenate Strings in MySQL appeared first on Devart Blog.

Meet the long-awaited release of dbForge tools for MySQL. We have enhanced them with a few new features that will surely come in handy.  However, the foremost thing in this update is that our tools now can run on Linux and macOS through CrossOver, a solution that helps launch Windows applications on different operating systems. […]

The post The Enhanced dbForge Tools for MySQL v9.1 Are Out! appeared first on Devart Blog.