Tag: Database

Data in a MySQL/MariaDB database is stored in tables. A simple way of thinking about indexes is to imagine an extensive spreadsheet. This type of system is not always conducive to quick searching; that’s where an index becomes essential. If there is no index, then the database engine has to start at row one and browse through all the rows looking for the corresponding values. If this is a small table, then it is no big deal, but in larger tables and applications where there can be tables with millions and even billions of rows, it becomes problematic. As you can imagine, searching through those rows one by one will be time-consuming, even on the latest hardware. The solution is to create an INDEX (or more than one) for your data.

In this article, we will learn the basics of joining tables in SQL. We will learn about Left, Right, Inner, and Outer JOINs and give examples of how to use them.

What is SQuirreL SQL Client?

The SQuirreL SQL Client is an open-source, graphical Java database administration tool that will allow you to review the structure of a JDBC compliant database, browse the data in tables, and issue SQL commands.

In this article, we will be discussing how to install Microsoft SQL or MSSQL on Linux. Microsoft SQL, colloquially referred to as MSSQL, is a relational database management system created by Microsoft. Open-source MySQL and PostgreSQL are typically synonymous with Linux distributions, but working with MSSQL on Linux is also supported. MSSQL offers some features that its open-source counterparts don’t, and depending on application requirements, it might be the right choice for an RDBMS. In this tutorial, we are going to walk through how to install MSSQL on CentOS 7 and Ubuntu 16.04.

There may be times when you need to clean up post revisions created on your site. This is possible, using the commands already available in WP-CLI.

Similar to Dropbox and Google Drive, Nextcloud is self-hosting software that allows you to share files, contacts, and calendars. But, unlike Dropbox and Google Drive, your files will be private and stored on your server instead of a third-party server. Nextcloud is a GDPR and HIPAA compliant hosting solution, so your files will be encrypted along with the ability to audit. For this tutorial, we’ll be installing our Nextcloud instance on our Ubuntu VPS server.

When using PhpMyAdmin, it’s essential to have the correct user permissions to create edits/writes to the database.  Otherwise, insufficient permissions can lead to  errors like the ones pictured below “#1044 – Access denied for user …[using password: YES]” and “#1045 – Access denied for user…[using password: YES]”.  In our tutorial, we’ll show you how to correct this issue using the command line terminal.  Let’s get started!

The Action Scheduler is a background processing, queue job runner which is built into WooCommerce core. A number of plugins use the Action Scheduler, WooCommerce Subscriptions and WooCommerce Follow-Ups being two of the best known.

This guide walks you through some common tasks surrounding a Postgres server. In this tutorial, we’ll cover installing Postgres, creating new databases and users, backing up databases, and more! Let’s dig in!

Table of Contents

Listing databases
Dump a database
Dumping all databases
Dump Grants
Delete or Drop a Database
Delete a Grant
Restore a Database
Restore Grant