SQL Tutorials

Advance your relational databases and SQL knowledge with a series of hands-on tutorials.

Featured Posts

What are Duplicate Records in SQL

SQL Tutorials

What are Duplicate Records in SQL

Duplicate records in SQL, also known as duplicate rows, are identical rows in an SQL table. This means the values in each column coincide.

by Martin Ganchev 5 min read

How to Create an Inner Join in SQL

SQL Tutorials

How to Create an Inner Join in SQL

by Martin Ganchev 11 min read

Relationships between Tables in SQL

SQL Tutorials

Relationships between Tables in SQL

by Martin Ganchev 6 min read

What are Relational Schemas and What is a Primary Key

SQL Tutorials

What are Relational Schemas and What is a Primary Key

by Martin Ganchev 7 min read

Databases vs Spreadsheets

SQL Tutorials

Databases vs Spreadsheets

by Martin Ganchev 13 min read

SQL is a Declarative Language

SQL Tutorials

SQL is a Declarative Language

by Martin Ganchev 5 min read

Relational Database Essentials

SQL Tutorials

Relational Database Essentials

by Martin Ganchev 7 min read

Introduction to Databases and an Example of a Data Table

SQL Tutorials

Introduction to Databases and an Example of a Data Table

by Martin Ganchev 7 min read

Why You Should Learn SQL

SQL Tutorials

Why You Should Learn SQL

by Martin Ganchev 6 min read

How to Connect SQL and Tableau

SQL Tutorials

How to Connect SQL and Tableau

by Martin Ganchev 11 min read

Installing MySQL and getting acquainted with the interface

SQL Tutorials

Installing MySQL and getting acquainted with the interface

by Martin Ganchev 20 min read

SQL DELETE Statement

SQL Tutorials

SQL DELETE Statement

by Martin Ganchev 12 min read

SQL INSERT Statement

SQL Tutorials

SQL INSERT Statement

by Martin Ganchev 14 min read

SQL UPDATE Statement

SQL Tutorials

SQL UPDATE Statement

by Martin Ganchev 12 min read

SQL Best Practices - How to type code cleanly and perfectly organized

SQL Tutorials

SQL Best Practices - How to type code cleanly and perfectly organized

by Martin Ganchev 14 min read

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