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Oracle SQL PIVOT and UNPIVOT: The Complete Guide

Oracle SQL PIVOT and UNPIVOT: The Complete Guide

Have you ever needed to convert a set of data from rows into columns? You can do this using the Oracle PIVOT feature (and the reverse using Oracle UNPIVOT). Table of Contents This guide covers the following topics. You can click on any of these entries to be taken to... Read more
SQL Views and Materialized Views: The Complete Guide

SQL Views and Materialized Views: The Complete Guide

By the end of this article, you’ll know all about views, materialized views, how to create them, their advantages, and much more. Table of Contents Here’s what we will be covering in this guide. Click on any of the headings and it will take you to that section on this... Read more
SQL DISTINCT: The Complete Guide

SQL DISTINCT: The Complete Guide

The SQL DISTINCT keyword lets you find unique rows. By the end of this article, you’ll know how to use it, what it can do, and understand several different examples. What is SQL DISTINCT? DISTINCT is a keyword in SQL that allows you to show unique or distinct results.... Read more
SQL Operators: The Complete Guide

SQL Operators: The Complete Guide

Do you want to know the different ways of comparing data in SQL, using operators? SQL operators include EXISTS, IN, LIKE, BETWEEN, and many more. We’ll look at each of them in this guide. By the end of the guide, you’ll have a solid understanding of these operators... Read more