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MySQL Replication with ProxySQL on WHM/cPanel Servers - Part 2
In the first part of the series, we showed you how to deploy a MySQL Replication setup with ProxySQL with WHM and cPanel. In this part, we are going to show some post-deployment operations for...
View ArticleBacking Up All MySQL Server Databases or Only the Required Ones
When having only several databases to manage, regular backup operations can be done quite easily and seamlessly either with the help of a few simple scripts or by configuring an SQL Server agent that...
View ArticleWhere are the logs for a Tungsten Cluster?
The Question Recently, a customer asked us: Where are the logs for a Tungsten Cluster and which are the proper log files to monitor if I do a master role switch to another node? The Answer: Part I...
View ArticleHow to Declare Variables in MySQL
This tutorial describes how to declare a variable (user-defined, local, and system vars) in MySQL. It provides simple examples for clarity. The post How to Declare Variables in MySQL appeared first on...
View ArticleMySQL FIND_IN_SET Function with Simple Examples
This tuorial explains MySQL FIND_IN_SET function which finds the position of a string in a comma-separated list of strings with examples. The post MySQL FIND_IN_SET Function with Simple Examples...
View ArticleMySQL DATE_SUB Function with Simple Examples
This tutorial explains MySQL DATE_SUB function which subtracts a slice of time (in days e.g. 1 day) from the given date with examples. The post MySQL DATE_SUB Function with Simple Examples appeared...
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SQL LIKE Operator Tutorial With Example
SQL LIKE Operator Tutorial With Example is today’s leading topic. The LIKE operator is used in the WHERE clause to search for the specified pattern in a column. There are two wildcards often used in...
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How To Add Comments in SQL Query Tutorial With Example
How To Add Comments in SQL Query Tutorial With Example is today’s topic. Comments are used to explain the sections of SQL statements, or to prevent the execution of SQL statements. Comments are not...
View ArticleRunning Galera Cluster effectively on Amazon Web Services (AWS) and comparing...
Do you want to run Galera Cluster in the cloud? Why not learn to setup a 3-node Galera Cluster using Amazon Web Services (AWS) Elastic Compute Cloud (EC2), and run it yourself (3-node because this is...
View ArticleThe MySQL High Availability Landscape and where Galera Cluster fits in (USA...
The MySQL Server High Availability landscape provides with a slew of tools to help you ensure that your databases keep humming. Such tools are Galera Cluster, however, it is worth looking at...
View ArticleHow to install Apache, PHP 7.3 and MySQL on CentOS 7.6
This tutorial shows how to install an Apache web server on a CentOS 7 server with PHP (mod_php with PHP 5.4, 7.0, 7.1, 7.2 or 7.3) and MySQL support. This setup is often referred to as LAMP which...
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Percona XtraBackup 2.4.15 Is Now Available
Percona is glad to announce the release of Percona XtraBackup 2.4.15 on July 10, 2019. You can download it from our download site and apt and yum repositories. Percona XtraBackup enables MySQL backups...
View ArticleShinguz: Enable General Query Log per Connection in MariaDB
The General Query Log in MariaDB is a Log (file or table) that logs every statement sent from the Application to the MariaDB Database Server from the Connect Command to the Quit Command. A simple...
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SQL Merge Statement Tutorial With Example | Merge In SQL
SQL Merge Statement Tutorial With Example is today’s topic. SQL MERGE STATEMENT is the combination of INSERT, UPDATE, and DELETE statement. Merge Statement can perform all these operations in our main...
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SQL Delete Query Tutorial | Delete Statement In SQL Example
SQL Delete Query Tutorial | Delete Statement In SQL Example is today’s topic. The DELETE statement is used to remove existing records in a table. We have already seen the create table, insert row,...
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SQL Truncate Table Statement Tutorial With Example
SQL Truncate Table Statement Tutorial With Example is today’s topic. The DROP TABLE the command deletes a table in the database. Be careful before removing a table and deleting table results in loss...
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SQL CREATE INDEX Statement Tutorial With Example
SQL CREATE INDEX Statement Tutorial With Example is today’s topic. SQL CREATE INDEX statement is used to create the indexes in the tables. Indexes are used to retrieve the data from the database very...
View ArticleMySQL InnoDB Cluster – Recovering and provisioning with MySQL Enterprise Backup
Like I stated in my previous article - MySQL InnoDB Cluster - Recovering and provisioning with mysqldump : "As the administrator of a cluster, among others tasks, you should be able to restore failed...
View ArticleSome queries related to MySQL Roles
MySQL Roles are becoming more and more popular. Therefor, we receive more and more questions related to them. First I encourage you to read this previous 2 posts: MySQL 8.0 Roles and GraphML MySQL...
View ArticleMySQL Functional Index and use cases.
MySQL has introduced the concept of functional index in MySQL 8.0.13. It is one of the much needed feature for query optimisation , we have seen about histogram in my last blog. Let us explore the...
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