No. Only #2 is correct.
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AnonymousHow long has John a beard?Isn't the question above about the length of John's beard?
Anonymous AnonymousHow long has John a beard?Isn't the question above about the length of John's beard?No, that question doesn't make sense.
Anonymous AnonymousHow long has John a beard? Isn't the question above about the length of John's beard?For that you want How long is John's beard?