A value in a field or variable that indicates nothing was ever derived and stored in it. For example, in a decimal-based amount field, a null value might be all binary 0s (null characters), but not a ...

Don't let Null values derail your formulas. See how to use the NZ function to convert the values to zeroes. You’ve created a query that calculates an invoice total by adding the order total and the ...

Null or nonexistent data gets complicated when the application expects a data value and gets nothing or unexpected values; that's when you must perform coding that properly handles these situations to ...