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  • Subject: Re: Null Capable Fields
  • From: John Hall <jhall@xxxxxxxxxxx>
  • Date: Tue, 12 Oct 1999 16:00:20 -0400

null capable date fields ??? 

Did I miss something ??

NEED NEED NEED


Gwecnal@aol.com wrote:
> 
> In a message dated 99-10-12 13:17:28 EDT, you write:
> 
> > ok, my curioisty is piqued.  What problem does a "null-capable" field
> >  solve?  I thought it's only function was to signal a data field's
> >  virginity, and I can't imagine a problem that solves.
> 
> It provides the 'correct' way of expressing the value of fields that have no
> value.  Like 'termination date' for a not-terminated employee in the employee
> master or 'date shipped' for an order that has not shipped.  Now you fill
> these with some dummy 'magic' data like all *zeros or *loval or *hival but
> they really should have NO value.
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