What's wrong with this INNER JOIN SQL query? - php

Question

I have three tables, tblMembers, tblBooks and tblReviews. The idea is a book review website.
Currently the Book Title is only displayed if there are reviews written for it, however I want the book title to always be displayed along with; either a list of reviews, or, the text, 'this title has not yet been reviewed.'
What is wrong with this SQL query?
$sql = "
SELECT *
FROM tblBooks
INNER JOIN tblReviews
ON tblBooks.bookID = tblReviews.bookID
INNER JOIN tblMembers
ON tblReviews.userID = tblMembers.userID
WHERE tblReviews.bookID = :bookID";
$query = $odb->prepare($sql);
$query->execute(array(":bookID" => $bookID));
$results = $query->fetchAll();
echo "<h1>".$results[0]['longTitle']."</h1>";
if($results !== FALSE && $query->rowCount()>0) {
foreach($results as $result) {
echo "Reviewed by: " . $result['firstName'] . " " . $result['lastName'];
echo "<br />";
echo "Rating: " . $result['rating']."/100";
echo "<br />";
echo "Date: " . $result['reviewDate'] . " " . $result['reviewTime'];
echo "<br />";
echo "Review:";
echo "<br />";
echo $result['reviewText'];
echo "<hr />";
}
} else { // the book has not been reviewed yet
echo "There are no reviews for this title yet";
}
As mentioned above, the line echo "<h1>".$results[0]['longTitle']."</h1>"; is only executed if the book has reviews, I want to get the book details prior to checking if it has reviews or not. How can I do this?
On another note, how can I check which books haven't been reviewed yet and populate a drop down list with the results? - This has been answered :D
How can I either:
Populate two separate drop down lists, one for books that have reviews and one for books that haven't been reviewed yet (this one I can do as I have the SQL from the question above).
OR
Populate the single dropdown list but put books that have reviews at the top, separated by a string of characters, let's say "---------- THESE BOOKS HAVEN'T BEEN REVIEWED YET ----------" followed by the books that haven't yet been reviewed. Is this possible?

Answer 1

SELECT *
FROM tblBooks
LEFT JOIN tblReviews
ON tblBooks.bookID = tblReviews.bookID
LEFT JOIN tblMembers
ON tblReviews.userID = tblMembers.userID
WHERE tblReviews.bookID = :bookID
Will return all books regardless if there is a review or a member affiliated with it.
IF there is a review return it, and if the review has a member it as well. otherwise NULL values will come back in fields related to tblMembers or tblReviews.