handle the case where there is no data in db yet.
authorStephen Soltesz <soltesz@cs.princeton.edu>
Wed, 3 Dec 2008 19:06:59 +0000 (19:06 +0000)
committerStephen Soltesz <soltesz@cs.princeton.edu>
Wed, 3 Dec 2008 19:06:59 +0000 (19:06 +0000)

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