I have to agree with the comments that the question was poorly worded. I would have gotten the question wrong anyway, but I couldn't even hazard a decent guess based on the way it was asked. 😛
- webrunner
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A SQL query walks into a bar and sees two tables. He walks up to them and asks, "Can I join you?"
Ref.: http://tkyte.blogspot.com/2009/02/sql-joke.html