The simple answer, which is probably "right" for much of the audience is to explain undef and how you test for it.
You show your SQL bias as much as djantzen shows his C bias!

There is no "right" answer for "much of the audience", except to ask what is meant. And that's my original point. My litany of possible responses is meant to describe how many "right" answers there could be possibly, and no answer is more right than any of the others, except determined by context!

-- Randal L. Schwartz, Perl hacker

In reply to Re: Re: How do I test for a NULL string? by merlyn
in thread How do I test for a NULL string? by merlyn

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