SQL Analytical Window Functions: LEAD, LAG and NTILE with Practical Examples
Introduction SQL becomes much more powerful when you move beyond simple SELECT, WHERE, GROUP BY, and aggregate functions. In real-world […]
SQL Training
How to Join Multiple Tables in SQL – 6 Tables Join Example
In this tutorial you will learn SQL commands to Join 6 Tables together and then answer the data analysis questions.
SQL Group By & Inner Join Practice Questions and answer
Dataset we are using in this tutorial is Northwind Sample Superstore Dataset Question: How many products are there in each
PostgreSQL, SQL Training
SQL vs. NoSQL: What’s the Difference?
SQL (Structured Query Language) and NoSQL (Not Only SQL) are two major types of databases, each designed for different use
SQL Training
Left Join and Right Join Example in SQL
Here’s an example of two simple tables you can use to learn LEFT JOIN and RIGHT JOIN concepts in SQL:
Power BI, SQL Training
Power BI + SQL School Data Analysis Project
Power BI + SQL School Data Analysis Project This project involves using Power BI and SQL to analyze and visualize
Northwind Dataset for PostgreSQL, MySQL and CSV
The Northwind dataset is a sample database that has been widely used for learning and testing database concepts, particularly relational
SQL Training
Multiple Doctor Medical Prescription System – Database Structure
In a multiple doctor prescription system, you would likely need the following tables to manage doctors, patients, prescriptions, and medications.