This study guide covers the internal workings of a basic SQL SELECT statement in Oracle. We'll focus on how the query retrieves data from a table and how it determines which rows to select. The query ...

PL/SQL stands for Procedural Language extension of SQL. PL/SQL is a combination of SQL along with the procedural features of programming languages. It was developed by Oracle Corporation in the early ...

This repository contains a collection of SQL queries that demonstrate how to create hierarchical queries in Oracle SQL using the CONNECT BY PRIOR clause. Hierarchical queries are essential for ...

The SQL Developer unit testing framework involves a set of sequential steps for each test case. The steps are as follows, including the user input for before the step is run and the framework ...

I need help with a Oracle SQL query. I have two tables, with data similiar to the following: One 'student' table with a date that the student registered and one 'semester' table with semester start ...