How to handle NULL (empty fields) and common pitfalls

For those new to data analysis, I will explain how to handle NULL (empty fields), where mistakes are most common in SQL, ...

Don't Let null Be a Lie — Designing for Integrity via "Measurement"

"Sometimes you can't display true in the verification results"TL;DR: Masking tools often promise that "nothing has changed ...
TechRepublic

Learn the differences between Is Null and IsNull() in Access

How many null values exist? What is the difference between a null value and a blank entry? This article answers those questions and more by discussing what to look for when creating Access apps that ...
VICE

Having ‘Null’ for a Last Name Kind of Sucks

In the world of computer science, the word “null” means “no value.” That’s not to be confused with zero which means zero, an actual numerical value. To put it another way, null is so valueless that it ...
TechRepublic

10 tricks for handling null values in Microsoft Access

Null values indicate that data is missing or unknown, and if you don’t take steps to handle them, you could wind up with runtime errors or erroneous data. These Access pointers will help you ...
Investopedia

Understanding Null Hypothesis in Investment Analysis

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...