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Book Database is for managing a library of books, documenting book reviews, and tracking review analytics.

I have a book review plugin already, but Book Database is a fun recoding project for me. It's basically, "what would my other plugin look like if I could start over with zero backwards compatibility?" -- Basically a rewrite considering all the things I now hate about my other plugin and what I wish I could have done differently.

Things I'm focusing on:

• Fewer third party libraries. These started to really piss me off in my other plugin.
• Better job scaling, when people want to add thousands of books.
• Better UI and UX.
• And finally, I'm focusing more on what I want from this plugin, rather than what other people say they want.

Features:

• Add books to the database with book information (title, author, cover, synopsis, etc.).
• Create reviews and associate those reviews with books.
• Display book information in blog posts via a shortcode.
• Maintain a front-end archive of all your book reviews.
• See analytics about the books you've reviewed during a specific date range.

Requirements:

• PHP 7.0+
• MySQL 5.6.5+
• 64-bit

Fun Queries:

Most read books:

SELECT
  book_id,
  book.title,
  COUNT(*) AS times_read
FROM `wp_bdb_reading_log` log INNER JOIN `wp_bdb_books` book ON book.id = log.book_id
GROUP BY book_id
HAVING times_read > 1
ORDER BY times_read DESC
LIMIT 25

Books you own two or more copies of:

SELECT
  book_id,
  book.title,
  COUNT(*) AS number_copies
FROM `wp_bdb_owned_editions` e INNER JOIN `wp_bdb_books` book ON book.id = e.book_id
GROUP BY book_id
HAVING number_copies > 1
ORDER BY number_copies DESC

Get all the books and their ratings from a specific term name ("Fantasy") that were read in 2017.

SELECT
  book.title,
  log.rating,
  log.date_finished
FROM `wp_bdb_books` book RIGHT JOIN `wp_bdb_reading_log` log ON log.book_id = book.id
  INNER JOIN `wp_bdb_book_term_relationships` r ON r.book_id = book.id
  INNER JOIN `wp_bdb_book_terms` term ON (term.id = r.term_id AND term.name = 'Fantasy')
WHERE 2017 = YEAR (date_finished)
ORDER BY log.date_finished ASC

Same as above, but checks reviews only, where the review was written in a specific year (2017).

SELECT
  book.title,
  log.rating
FROM `wp_bdb_reviews` review RIGHT JOIN `wp_bdb_reading_log` log ON log.review_id = review.id
  INNER JOIN `wp_bdb_books` book ON book.id = review.book_id
  INNER JOIN `wp_bdb_book_term_relationships` r ON r.book_id = review.book_id
  INNER JOIN `wp_bdb_book_terms` term ON (term.id = r.term_id AND term.name = 'Fantasy')
WHERE 2017 = YEAR (date_written)
ORDER BY book.title ASC

Get books with 4 stars or higher in the genres "Contemporary" and "Romance":

SELECT
  book.title,
  author.name,
  log.rating
FROM wp_bdb_books AS book
  INNER JOIN wp_bdb_book_author_relationships AS r ON book.id = r.book_id
  INNER JOIN wp_bdb_authors AS author ON r.author_id = author.id
  INNER JOIN wp_bdb_reading_log AS log ON book.id = log.book_id
WHERE log.rating > 4
      AND book.id IN (
  SELECT book_id
  FROM wp_bdb_book_term_relationships AS r
    INNER JOIN wp_bdb_book_terms AS t ON r.term_id = t.id
  WHERE t.name = 'Contemporary'
        AND book_id IN (
    SELECT book_id
    FROM wp_bdb_book_term_relationships AS r2
      INNER JOIN wp_bdb_book_terms AS t2 ON r2.term_id = t2.id
    WHERE t2.name = 'Romance'
  )
)
GROUP BY book.id
ORDER BY log.rating DESC

Get a count of how many books were read in each format in a given year (2017).

SELECT
  format,
  COUNT(*) AS number_books_read
FROM `wp_bdb_owned_editions` AS b
  INNER JOIN wp_bdb_reading_log AS l ON l.book_id = b.book_id
WHERE 2017 = YEAR (date_finished)
GROUP BY format
ORDER BY format ASC;

Get a count of how many books read in 2017 were published in each year.

SELECT
  YEAR(pub_date) AS pub_year,
  COUNT(*) AS number_books_published
FROM wp_bdb_books AS b
  INNER JOIN wp_bdb_reading_log AS l ON l.book_id = b.id
WHERE 2017 = YEAR (date_finished)
GROUP BY YEAR(pub_date)
ORDER BY pub_year DESC;

Get your top 5 most read genres (order by ASC to get least read).

SELECT COUNT(log.id) AS count,t.name
FROM wp_bdb_reading_log AS log
INNER JOIN wp_bdb_book_term_relationships AS tr ON( log.book_id = tr.book_id )
INNER JOIN wp_bdb_book_terms AS t ON( tr.term_id = t.id )
WHERE t.taxonomy = 'genre'
GROUP BY t.name
ORDER BY count DESC
LIMIT 5;

Average number of days it takes you to finish a book. To exclude DNF books, add another condition for AND percentage_complete >= 1.

SELECT ROUND( AVG( DATEDIFF( date_finished, date_started ) * percentage_complete ) ) + 1 AS number_days
FROM wp_bdb_reading_log
WHERE date_started IS NOT NULL
AND date_finished IS NOT NULL

Average number of days between the date you acquire a book and the date you first start reading it.

SELECT ROUND( AVG( DATEDIFF( date_started, date_acquired ) ) ) + 1 AS number_days_to_start
FROM wp_bdb_owned_editions AS edition
INNER JOIN wp_bdb_reading_log AS log ON log.id = (
    SELECT id
    FROM wp_bdb_reading_log AS log2
    WHERE edition_id = edition.id
    AND date_started IS NOT NULL
    ORDER BY date_started
    LIMIT 1
)
WHERE date_acquired IS NOT NULL