Frankly, I'm far more worried about the fact that anyone would "cash a check against" a business account as if it would offer some sort of recourse for a check endorsed by an individual. It's a powerful indicator that they have no real comprehension of what they are doing.
A subpoena that would adequately describe this activity would have to be tailored to a particular purpose and the bank's response would probably be "There is no state or federal law that would require us to segregate this information and the search itself would be nearly impossible."
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.