And in SQL "NULL" means "value not known"
or "value not available" and isn't represented
by any specific value at all (well, besides of the
Oracle database that can't see the difference
between a string of length = 0 and a NULL, which
is, of course, two different things. Silly...)

Jan-Erik.


Sergio Masci wrote:


> The ASCII character represented by code 0 is actually called NUL. Like you I
> used to use NULL when looking for end of string, but over the years I've moved
> away from this because it is difficult to determin at a glance if the intension
> is to compare the pointer or the value pointed to.

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