How to Solve Find Books with Polarized Opinions Problem
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Find Books with Polarized Opinions
Table: books +-------------+---------+ | Column Name | Type | +-------------+---------+ | book_id | int | | title | varchar | | author | varchar | | genre | varchar | | pag...
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Understanding the Find Books with Polarized Opinions Problem
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Problem Statement
Table: books +-------------+---------+ | Column Name | Type | +-------------+---------+ | book_id | int | | title | varchar | | author | varchar | | genre | varchar | | pages | int | +-------------+---------+ book_id is the unique ID for this table. Each row contains information about a book including its genre and page count. Table: reading_sessions +----------------+---------+ | Column Name | Type | +----------------+---------+ | session_id | int | | book_id | int | | reader_name | varchar | | pages_read | int | | session_rating | int | +----------------+---------+ session_id is the unique ID for this table. Each row represents a reading session where someone read a portion of a book. session_rating is on a scale of 1-5. Write a solution to find books that have polarized opinions - books that receive both very high ratings and very low ratings from different readers. A book has polarized opinions if it has at least one rating ≥ 4 and at least one rating ≤ 2 Only consider books that have at least 5 reading sessions Calculate the rating spread as (highest_rating - lowest_rating) Calculate the polarization score as the number of extreme ratings (ratings ≤ 2 or ≥ 4) divided by total sessions Only include books where polarization score ≥ 0.6 (at least 60% extreme ratings) Return the result table ordered by polarization score in descending order, then by title in descending order. The result format is in the following example.
Find Books with Polarized Opinions
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