How to count rows with the same value but different id - php

Question

I have used this sql statement in my database that uses COUNT and UNION ALL
SELECT tem.book_id, COUNT( * )
FROM(SELECT book_id FROM borrowdetails
WHERE borrowdetails.borrow_status = 'returned'
UNION ALL
SELECT book_id from reserve) as tem
GROUP BY book_id
ORDER BY book_id DESC
then i used this code to name the id in the PHP table
while($row=mysql_fetch_array($user_query)){
$id=$row['book_id'];
$book_query = mysql_query("select * from book where book_id = '$id'")or die(mysql_error());
}
it works fine but it doesn't unite the data with the same name because it has different id's like this
+------+------+-------+
| id | name | count |
+------+------+-------+
|1 |A | 3 | the id here is not shown at the table in PHP just
+------+------+-------+ inside the database but the A is duplicate.
|2 |A | 1 |
+------+------+-------+
|3 |B | 2 |
+------+------+-------+
my desired output should be like this without the id showing in the table.
+------+-------+
| name | count |
+------+-------+
|A | 4 |
+------+-------+ this is the table that should be shown in PHP
|B | 2 |
+------+-------+
as you could see the name A's count becomes four because i want also to add the COUNT(*) of both A's.
What am i going to do in order to achieve the desired outcome?
btw this is the db tables that are used.
+------+------+ +---------+---------+ +-------+-------+
| book table | |borrowdetails table| | reserve table |
+------+------+ +---------+---------+ +-------+-------+
| id | name | |brw_dt_id| book_id | |res_id |book_id|
+------+------+ +---------+---------+ +-------+-------+
|1 |A | | 1 | 2 | | 1 | 1 |
+------+------+ +---------+---------+ +-------+-------+
|2 |A | | 2 | 3 | | 2 | 1 |
+------+------+ +---------+---------+ +-------+-------+
|3 |B | | 3 | 3 | | 3 | 1 |
+------+------+ +---------+---------+ +-------+-------+

Answer 1

You would want to use book_name rather than using book_id.
I haven't tried this, but it should work
Select book_name, count(*) as cnt from books
where book_id IN (
SELECT book_id FROM borrowdetails
WHERE borrowdetails.borrow_status = 'returned'
UNION ALL
SELECT book_id from reserve
)
GROUP BY Book_Name
ORDER BY Cnt

Answer 2

We would normally write that this way
SELECT book_name
, count(*) cnt
FROM books x
JOIN
( SELECT book_id
FROM borrowdetails
WHERE borrowdetails.borrow_status = 'returned'
UNION ALL
SELECT book_id from reserve
) y
ON y.book_id = x.book_id
GROUP BY Book_Name -- this assumes that book_name is unique
ORDER BY Cnt