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Treatment of NULL values

From: Julian Reschke <julian.reschke@gmx.de>
Date: Sat, 14 Dec 2002 17:14:43 +0100
To: <www-webdav-dasl@w3.org>
Message-ID: <JIEGINCHMLABHJBIGKBCKENDFPAA.julian.reschke@gmx.de>

Hi.

Section 5.5.3 [1] currently says:

"NULL values are "less than" all other values in comparisons.

Empty strings (zero length strings) are not NULL values. An empty string is
"less than" a string with length greater than zero."

This seems to imply that the value of the expression

	<lt><prop><some-undefined-property/></prop><literal></literal></lt>

is TRUE. However, I think it should be UNKNOWN.

Shouldn't the statement be rewritten to only refer to the case of *sorting*
results?

Julian


[1]
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html#nu
ll-values>

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Received on Saturday, 14 December 2002 11:15:28 GMT

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