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SQL Tutorial
Data Modeling and Architecture Terminology Guide
A Brief History of SQL and its Usefulness
What are Different Types of Databases?
Writing SQL in Coginiti
Beginner
SQL Select
SQL Limit
SQL Where
SQL Create Table & Insert Into
SQL Comparison Operators
SQL Logical Operators
SQL In
SQL Like
SQL Is Null
SQL Between
SQL And, Or
SQL Not
SQL Order by
Export Data
Create a Table
Drop a Table
Create a View
SQL Parameters
Drop a View
Rename a Table
SQL Delete
Add a Column
Drop a Column
SQL Update
SQL Insert
Rename a Column
Intermediate
SQL Aggregate Functions
SQL Count
SQL Sum
SQL Min/Max
SQL Average
SQL Group by
SQL Case
SQL Having
Pivoting Data
Transpose Data
SQL Join
SQL Distinct
SQL Joins on Multiple Keys
SQL Union
Data Types
Precision and Scale
Subqueries
SQL Date Formats
Snowflake Advanced Date Formatting
Redshift TO_CHAR for Dates
BigQuery Date Formatting Functions
SQL Window Functions
Charting
String Functions in SQL
A Quick Guide to Pivoting Data
Advanced
Databricks SQL Functions
Trino Advanced SQL
CoginitiScript Macros
Churn Rate
Index in SQL
Query Date and Time
Group by Time
Round Timestamps
Get the First Row per Group
CoginitiScript Constants
Analysis
Coalesce in SQL
Calculating Percentiles
How to Do Type Casting
Import a CSV
Compare Values When One Is Null
How to Query a JSON Column
How to Write a Case Statement
How to Have Multiple Counts
Using a Common Table Expression (CTE)
Calculate Cumulative Sum (Running Total)

SQL Tutorial

SQL Tutorial for Data and Business Analysts

Welcome to your first step to becoming a data professional! Learn SQL to access, manage, and analyze data stored in databases. No coding experience needed.

Learning SQL (Structured Query Language) is the perfect start a career in data analysis and an excellent entry point to programming because its syntax is especially human-readable. You can guess what the commands do even if you don’t know any SQL.

When you become familiar with SQL, you unlock several new potential career paths, such as

  • Data Scientist
  • Data Analyst
  • Business Analysts
  • Business Intelligence Developer

Data analysis is a valuable skill in today’s data-driven world. It helps individuals and organizations who want to answer questions with data.

SQL is the standard data analysis programming language that allows data professionals to communicate with data stored in databases. It is used to access, manage, and analyze data. It is very easy to learn, and is among the most in-demand job skills.

We have designed this tutorial for people who have no SQL coding experience and wish to advance their analytic skills beyond the world of spreadsheets, especially when too much data causes them to freeze. Learning SQL will empower you to be more autonomous, better understand how your data is structured, and to expand your professional development with a new skill.

The SQL tutorial has four levels beyond this introductory section, which you can navigate using the sidebar on the left. You can follow lesson by lesson and come back anytime. If you already have some SQL training, choose the level you want and skip what you already know.

Need a SQL editor to get started? Download a free trial of Coginiti Pro to practice your queries.