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.

DB2 has a special value called NULL. NULL means that a value in a row is not known or is missing; it does not mean the value is blank or zero. It is analogous to the SAS System's missing value. You ...

When adding a SodaCL missing_count check with an OR condition in the filter, we get inaccurate results for the samples. In particular, we discovered that this OR condition can override the dataset ...