On Fri, 4 Jan 2019, David G. Johnston wrote:
>> I wondered about this since NULL can be missing, unknown, or otherwise
>> defined. Are there benefits to allowing an empty value in that column when
>> checking that it's later than the start date rather than explicitly setting
>> a default date after the start date?
>>
>>
> I don’t understand the question...
David,
Understandable. :-)
Perhaps this is more clear: is there a difference between not specifying a
default end_date value and specifying NULL as the default end_date value?
Regards,
Rich