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Oracle Merge: The Complete Guide

Oracle Merge: The Complete Guide

Do you need to insert or update data depending on if it already exists? You can do this with the MERGE statement in Oracle SQL. What is the MERGE Statement? The MERGE statement is a type of statement that lets you either insert data or update data, depending on if it... Read more
SQL Joins: The Complete Guide

SQL Joins: The Complete Guide

An SQL join is a concept that allows you to retrieve data from two or more tables in a single query. It’s what makes databases so useful, and allows for data to be stored in separate tables and combined when it is needed. Let’s take a look at what SQL joins are, how... Read more
Oracle Constraints: The Complete Guide

Oracle Constraints: The Complete Guide

You want to avoid having bad data, right? Data that doesn’t make sense, is missing when it should be populated, or refers to other data that does not exist. We want to avoid these kinds of issues. How can we do that? We use constraints. In this article, I’ll explain... Read more
Introduction to Oracle SQL Course

Introduction to Oracle SQL Course

Do you want to learn SQL? You’ve come to the right place. On this page, you’ll find videos, links, and information for this Introduction to Oracle SQL course. So, keep reading to see what you’ll learn and watch the videos in this course. Contents – Introduction... Read more