Hugo Kornelis (5/10/2012)

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jalvarocrespo (5/10/2012)

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Tricky question indeed.

Well, but I can't find any difference between the result obtained and my response: When the table contains sparse columns and a sparse column set, then any null sparse columns will not be returned.

Isn't it right?

Your answer says that "any null sparse columns" (emphasis mine) won't be returned.

The correct answer says that "any sparse columns" (null or non-null) won't be returned.