Less is more

This is the story of a man named Jed
A poor programmer that had been hit in the head
Then one day he did a query for a home
Did a top one and ended in Oklahom (a)

Thing is, this guy correctly figured that for every address on a street, there was only one possible number. But there could be more than one person registered at a household and he really only wants one of them. So he does

SELECT TOP 1 FROM Adresses WHERE Street = @a and Address = @b

Thing he forgot about was that there might possibly be a 123 Main Street in more than one city. In a different state.
They're still digging themselves out of the huge data corruption that this created.

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