Subqueries Courses

Managing Relational Databases
Akamai via Coursera

Working with SQL and Databases in IntelliJ IDEA
JetBrains via YouTube

Oracle SQL All-in-One Quick Start Tutorial Series
Caleb Curry via YouTube

Querying Data with SQL Server
Pluralsight

Curso Avanzado SQL Oracle para Empresas y Desarrollo
Udemy

Advanced Data Retrieval Techniques in SQL Server
Pluralsight

Intuitive SQL for Data Analytics - Tutorial
freeCodeCamp

Introduction to DBMS
Chhattisgarh Swami Vivekanand Technical University via Swayam

Introduction to SQL
Pluralsight

Getting Started with Hive for Relational Database Developers
Pluralsight