MySQL: HAVING Clause
In this guide, we will explain how to use the MySQL HAVING clause with syntax and examples. Description The MySQL HAVING clause is used in combination with the GROUP BY clause to restrict the…
MySQL: GROUP BY Clause
In this guide we will explain how to use the MySQL GROUP BY clause with syntax and examples. Description The MySQL GROUP BY clause is used in a SELECT statement to collect data across…
MySQL: FROM Clause
In this guide, we will explain how to use the MySQL FROM clause with syntax and examples. Description The MySQL FROM clause is used to list the tables and any joins required…
Linux Admin – Set Up Perl for CentOS Linux
This topic is about Linux Admin - Set Up Perl for CentOS Linux. Perl has been around for a long time. It was originally designed as a reporting language used for…
MySQL: EXISTS Condition
In this guide, we will explains how to use the MySQL EXISTS condition with syntax and examples. Description The MySQL EXISTS condition is used in combination with a subquery and is considered…
Configure Ruby on CentOS Linux
This topic is about Configure Ruby on CentOS Linux. Ruby is a great language for both web development and Linux Administration. Ruby provides many benefits found in all the previous…
Set Up Python with CentOS Linux
This topic is about Set Up Python with CentOS Linux. Python is a widely used interpreted language that has brought professionalism to the world of coding scripted applications on Linux…
Configure PHP in CentOS Linux
This topic is about Configure PHP in CentOS Linux. PHP is the one of the most prolific web languages in use today. Installing a LAMP Stack on CentOS is something every system…
Linux Admin – Firewall Setup
This topic is about Linux Admin - Firewall Setup. firewalld is the default front-end controller for iptables on CentOS. The firewalld front-end has two main advantages over raw iptables − Uses easy-to-configure and…
Linux Admin – Process Management
This topic is about Linux Admin - Process Management. Following are the common commands used with Process Management–bg, fg, nohup, ps, pstree, top, kill, killall, free, uptime, nice. Work with…
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