S3 Drivers The NULL value can be surprising until you get used to it. By default, a column can hold NULL values. This enforces a field to always contain a value, which means that you cannot insert a new record, or update a record without adding a value to this field. Tests whether a value is not NULL. Tests whether a value is not NULL. The general syntax is: The general not null syntax is: To check for a NULLs[…]
