Select a.Name,count(b.title) as NumberOfBooks from AUTHOR a join BOOKS b on a.ID = b.AuthorID group by a.Name   (this finds the NUMBER OF BOOKS written by each AUTHOR)

Side Note – Find the MAX occurrences of a  value from a list of possible values

To do an equivalent of a MAX function (from a list of values, find the value with the maximum occurrences), just do a group by as illustrated above, followed by an order by DESC

Select a.Name,count(b.title) as NumberOfBooks from AUTHOR a join BOOKS b on a.ID = b.AuthorID group by a.Name order by NumberOfBooks DESC  (This ORDERS The NUMBER Of BOOKS in DESCENDING ORDER, so the MAX is on top).

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