Koen Verbeeck (5/16/2011)

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Euh... wut?

Is it me and I'm going blind, but aren't the first and the second answer exactly the same?

The second and the third resultset are just swapped around (and why would you do that?)

Why put the third resultset before the second resultset in 3 of the 4 answers?

And the explanation doesn't mention why inserting NULL in another string doesn't result in NULL, but in an empty space instead.

But thanks for the effort 😀