Spread the loveNULL in SQL is a powerful concept, representing the absence of a value. It’s used when data is unavailable or unknown, but its usage requires careful consideration. The first step is ...

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 ...

sql-data-cleaning-project and EDA on world_layoffs This project focuses on data cleaning using SQL. Key tasks included removing duplicates, standardizing data formats, handling null and empty values, ...