What I Do · SQL

Learning SQL from scratch, from what a database is to SELECT and JOIN, one step at a time.

What Is a Database? How It Differs from an Excel Sheet

What Is a Database? How It Differs from an Excel Sheet

SQLExcel
Relational Database Structure: Tables, Rows, Columns, Schema

Relational Database Structure: Tables, Rows, Columns, Schema

SQLExcel
Primary Key vs Foreign Key: How Tables Connect

Primary Key vs Foreign Key: How Tables Connect

SQLExcel Functions
Database Normalization: Why Split Data into Multiple Tables?

Database Normalization: Why Split Data into Multiple Tables?

SQLData Cleanup