Re: Eliminating Nulls

From: -CELKO- <jcelko212_at_earthlink.net>
Date: 1 Jul 2005 10:51:00 -0700
Message-ID: <1120240260.932922.185420_at_g49g2000cwa.googlegroups.com>

>> But i've never come across a "null" in the "real world" either. <<

Sure you have -- well, unless you are omniscient :) I have an arrival and departure date for any visit. Some one is still here so their departure is NULL (unknown, to-be-determined, known only to be after arrival, etc.). Thre is a lot of rtheory, especially in Stats, abut missing data. Received on Fri Jul 01 2005 - 19:51:00 CEST

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