Question: Write a query to display the number of different patrons who have ever checked out a book (Figure P7.83). Figure P7.83 Different Patrons to Check

Write a query to display the number of different patrons who have ever checked out a book (Figure P7.83).

Figure P7.83 Different Patrons to Check Out a Book DIFFERENT PATRONS 33

Figure P7.83 Different Patrons to Check Out a Book DIFFERENT PATRONS 33

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