GitHub

SQL NULL Handling in WHERE Clause

This repository demonstrates a common issue with NULL values in SQL WHERE clauses. The example query intends to select employees from the 'Sales' department with salaries greater than 100000. However, ...
GitHub

sql-null-functions.md

1. **ISNULL(): **The ISNULL function have different uses in SQL Server and MySQL. In SQL Server, ISNULL() function is used to replace NULL values. 2. **IFNULL(): **This function is available in MySQL, ...
Ars Technica

SQL: behavior of "WHERE Fieldname <> 'foo'" with null values, best solution?

just some info for anyone else who's not a sql guru:<BR><BR>i did the following selection on a table:<BR><BR>SELECT * FROM Table WHERE myField <> 'active'<BR><BR>the values in that colum are a mix of ...
Simon Fraser University

IS condition

IS NULL and IS MISSING are predicates that test for a missing value. IS NULL and IS MISSING are used in the WHERE, ON, and HAVING expressions. Each predicate resolves to true if the sql-expression's ...