I ran this query on Data Explorer. But it could include users who are author of some mobile apps. How to get user with High reputation and has written atleast one book?
closed as too localized by Sathya, ben is uǝq backwards, kiamlaluno, hims056, Diago Mar 4 '13 at 11:23
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Your query goes
Jon's profile does contain the word "Author", but not the word "book", so he's not caught by your query. Not sure why you're expecting to see him there?
Edit: also, the query is case sensitive, so you'd have to specify