MySQL UNION ALL SELECT Issue on getting all the SUM per column - mysql

Question

I wish to get the SUM of the product per column, not sure if the UNION ALL SELECT can handle the desired result considering that the first column is concatenated.
Here is the code:
SUM(product.product_id = 1) AS Soda,
SUM(product.product_id = 2) AS Liquor,
SUM(product.product_id = 3) AS Lemon,
SUM(product.product_id = 4) AS Mango,
SUM(product.product_id = 5) AS Inhaler,
SUM(1) AS Count
FROM line_item
JOIN product USING (product_id)
JOIN ( SELECT 0 lowest, 500 highest UNION
SELECT 501 , 1000 UNION
SELECT 1001 , 1500 UNION
SELECT 1501 , 2000 UNION
SELECT 2001 , 2500 ) ranges ON product.price * line_item.quantity BETWEEN ranges.lowest AND ranges.highest
GROUP BY ranges.lowest, ranges.highest
UNION ALL SELECT '','','','','','',
(
SELECT
COUNT(product.price * line_item.quantity)
FROM (line_item
INNER JOIN product ON line_item.product_id = product.product_id)
);
**The output:**
+-------------+------+--------+-------+-------+---------+-------+
| Revenue | Soda | Liquor | Lemon | Mango | Inhaler | Count |
+-------------+------+--------+-------+-------+---------+-------+
| 0 - 500 | 4 | 0 | 4 | 0 | 1 | 9 |
| 501 - 1000 | 0 | 0 | 0 | 2 | 0 | 2 |
| 1001 - 1500 | 0 | 1 | 0 | 2 | 2 | 5 |
| 1501 - 2000 | 0 | 2 | 0 | 0 | 1 | 3 |
| 2001 - 2500 | 0 | 1 | 0 | 0 | 0 | 1 |
| | | | | | | 20 |
+-------------+------+--------+-------+-------+---------+-------+
Thank for your help.

Answer 1

Have you tried ROLL UP operator? Seems like there's a similar problem to yours: Add a summary row with totals

Answer 2

I'm confused. You are defining the ranges already. If you want a range that encompasses all the values, just add it in:
FROM line_item JOIn
product
USING (product_id) JOIN
( SELECT 0 lowest, 500 highest UNION ALL
SELECT 501 , 1000 UNION ALL
SELECT 1001 , 1500 UNION ALL
SELECT 1501 , 2000 UNION ALL
SELECT 2001 , 2500 UNION ALL
SELECT 0 , 2500
-------^ all encompassing range
) ranges
ON product.price * line_item.quantity BETWEEN ranges.lowest AND ranges.highest
Voila! This also has the summary row.