Sorting from 2nd query OR functioning join query - php

Question

i currently have a table i need displayed like this:
but as you can see, its not sorted on "amount dropped" (named $amount and amount in the code)
i first need to gather the names and drop_id's from a table. which is done like this:
//----------------FETCH ALL CONTENTS FROM DROPTABLE TO DISPLAY DROPS------------\\
$query = "SELECT * FROM droptable
WHERE boss_id = ". $boss ."";
$stmt = $pdo->prepare($query);
$stmt->execute();
$result = $stmt->fetchAll(PDO::FETCH_ASSOC);
foreach($result as $row){
$drop_id = $row['drop_id'];
$drop = $row['dropname'];
$boss_id = $row['boss_id'];
$picture = $row['picture'];
this fetches the name of the drop(dropname). the id for it (drop_id), the boss id (boss_id) and the picture for it (picture).
it then goes on to check if ive ever logged a drop from the boss from another table:
//----------------FETCH ALL LOGGED DROPS FOR DISPLAYING AMOUNT------------\\
$query1 = "SELECT * FROM dropcounter
WHERE boss_id = ". $boss ." AND userid = ". $user ." AND drop_id = ". $drop_id ."";
$stmt1 = $pdo->prepare($query1);
$stmt1->execute();
$result1 = $stmt1->fetchAll(PDO::FETCH_ASSOC);
echo "<tr>";
echo "<td><img src='../images/". $picture ."'</td>";
echo "<td>". $drop . "</td>";
echo "<td>". $amount ."</td>";
echo "<td>". $percent ."</td>";
echo "<form action='logger.php' method='post'>";
echo "<td><input type='hidden' value=". $drop_id ." name='drop_id'>";
echo "<input type='hidden' value=". $boss_id ." name='boss_id'>";
echo "<input type='hidden' value=". $user ." name='user'>";
echo "<input type='submit' value='Add'></td>";
echo "</tr>";
echo "</form>";
this does everything i want exept sort on amount dropped or drop percentage (since they will sort the same). ive tried adding "ORDER BY amount DESC" in the 2nd query but it didnt sort.
ive also tried using JOIN, but it didnt come close to the result i wanted and i got stuck for 3 days on the query so went with the above code instead. but im willing to use join again if my wished result can be done.
here's the JOIN code that doesnt work:
$query = "SELECT dropcounter.drop_id, dropcounter.boss_id, dropcounter.add_date, dropcounter.username, dropcounter.amount, droptable.drop_id, droptable.dropname, droptable.boss_id, droptable.wiki_link, droptable.picture
FROM droptable
JOIN dropcounter
ON droptable.boss_id = dropcounter.boss_id
WHERE dropcounter.drop_id = droptable.drop_id AND droptable.boss_id = ". $boss ." AND dropcounter.username = ". $user ."
ORDER BY dropcounter.amount";
here's the structure i have on my tables:
DROPCOUNTER TABLE:
and here's DROPTABLE table:
if anyone would be able to help me with either one if them i would be very glad for your kindness!
here's a fiddle if anyone wanna try it out. ive imported some sample data: http://sqlfiddle.com/#!2/d66846/1/0

Answer 1

You need to use LEFT JOIN if you want to get rows from droptable that don't have a match in dropcounter. All the tests that refer to dropcounter have to be in the ON clause, otherwise the null matches will cause the tests to fail and those rows will be filtered out.
SELECT dc.add_date, dc.username, IFNULL(dc.amount, 0) amount, dt.drop_id, dt.dropname, dt.boss_id, dt.wiki_link, dt.picture
FROM droptable dt
LEFT JOIN dropcounter dc
ON dt.boss_id = dc.boss_id AND dc.drop_id = dt.drop_id AND dc.userid = $user
WHERE dt.boss_id = $boss
ORDER BY amount
DEMO

Answer 2

You're trying to use in joined statement:
dropcounter.username = ". $user ."
which contains 2 errors:
1. there isn't field username in that table
2. you haven't enclosed string in ''
Change it to dropcounter.userid
Also you don't need to select droptable.drop_id and droptable.boss_id as it's already selected from dropcounter table.
EDIT: Based on your fiddle:
SELECT dropcounter.drop_id, dropcounter.boss_id, dropcounter.userid, dropcounter.amount, droptable.dropname
FROM droptable
JOIN dropcounter
ON droptable.boss_id = dropcounter.boss_id
WHERE dropcounter.drop_id = droptable.drop_id AND droptable.boss_id = 1 AND dropcounter.userid = 1
ORDER BY dropcounter.amount DESC;
It works and sorts without problem.