While working with SQL you always face columns with NULL values. For avoiding that you can put a check on it. NULL value is something that is different from nothing and space ALTER proc ...

Abstract: The lack of information within relational databases expressed as NULL values presents a problem in ensuring the quality of data and the information retrieved by SQL queries. This is so ...

This repository demonstrates a common SQL query error related to handling NULL values in comparison conditions. The bug.sql file contains a query that unintentionally ...

This repository demonstrates a common SQL error related to handling NULL values in aggregate functions like SUM(). The bug.sql file contains a SQL query that ...