Question: How can self joins and subqueries be used to answer complex business questions about the Yelp database? Identify a business question that would require a

How can self joins and subqueries be used to answer complex business questions about the Yelp database?
Identify a business question that would require a self-join to answer.Identify a business question that would require a subquery to answer.Describe the mechanisms through which those resolutions would be achieved.

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