Learn how to optimize SQL queries for NULL values by following some best practices and techniques, such as using IS NULL or IS NOT NULL operators, avoiding NOT IN with NULL values, and more.

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 ...

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 ...

Cannot resolve the collation conflict between "Latin1_General_BIN2" and "SQL_Latin1_General_CP1_CI_AS" in the equal to operation. This does not depend on the database collation, whether the database ...

The difference is that the meaning of null is still conveyed without the potential need to know a column may be null and to write additional code in each query to ensure nulls are included. Similar to ...