Mysql Query numbering groups rows - mysql

Question

I looked for days for a way to show a compact continuous numbering for group rows.
The products can be single type in the carton or mix together. Some of the carton markings are already printed so I cannot rearrange carton markings.
I have this table:
+-----+------------+--------+-----------+
| qty | product_id | Type | carton_no |
+-----+------------+--------+-----------+
| 18 | 111 | single | 1 |
| 18 | 111 | single | 2 |
| 18 | 111 | single | 3 |
| 48 | 115 | single | 4 |
| 48 | 115 | single | 5 |
| 48 | 115 | single | 6 |
| 36 | 119 | single | 7 |
| 36 | 119 | single | 8 |
| 18 | 111 | single | 9 |
| 36 | 119 | single | 10 |
| 16 | 199 | single | 11 |
| 16 | 199 | single | 12 |
| 4 | 111 | mix | 13 |
| 4 | 115 | mix | 13 |
| 4 | 119 | mix | 13 |
| 4 | 199 | mix | 13 |
+-----+------------+--------+-----------+
The documents processor needs a view like this:
+-----------+-----+------------+--------+
| Numbering | QTY | product_id | Type |
+-----------+-----+------------+--------+
| 1-4 | 72 | 111 | single |
| 5-7 | 144 | 115 | single |
| 8-10 | 108 | 119 | single |
| 11-12 | 32 | 199 | single |
| 13 | 4 | 111 | mix |
| 13 | 4 | 115 | mix |
| 13 | 4 | 119 | mix |
| 13 | 4 | 199 | mix |
+-----------+-----+------------+--------+
The numbering are actually counting of total cartons for each product_id order by type, product_id ASC.
Any ideas?

Answer 1

WITH
cte1 AS (
SELECT qty,
product_id,
Type,
carton_no,
CASE WHEN product_id = LAG(product_id) OVER (ORDER BY carton_no)
THEN 0
ELSE 1
END new_group
FROM src ),
cte2 AS (
SELECT qty,
product_id,
Type,
carton_no,
SUM(new_group) OVER (ORDER BY carton_no) group_num
FROM cte1
)
SELECT CASE WHEN MAX(carton_no) > MIN(carton_no)
THEN CONCAT(MIN(carton_no), '-', MAX(carton_no))
ELSE MIN(carton_no)
END Numbering ,
SUM(qty) QTY,
product_id,
ANY_VALUE(Type) Type
FROM cte2
GROUP BY group_num, product_id;
fiddle

Answer 2

WITH
cte1 AS (
SELECT qty,
product_id,
Type,
carton_no,
CASE WHEN product_id = LAG(product_id) OVER (ORDER BY type desc, product_id)
THEN 0
ELSE 1
END new_group
FROM src order by type desc, product_id ),
cte2 AS (
SELECT qty,
product_id,
Type,
carton_no,
SUM(new_group) OVER (ORDER BY type desc, product_id) group_num
FROM cte1 ),
cte3 AS (
SELECT SUM(qty) QTY,
product_id,
Type,
group_num,
carton_no,
count(group_num) sum,
LAG(count(group_num)) OVER () prevsum
FROM cte2 group by group_num order by type desc, carton_no
)
SELECT CASE WHEN group_num = 1 THEN CONCAT(group_num,'-', sum)
WHEN group_num <> 1 and Type = "mix" and LAG(carton_no) OVER (ORDER BY carton_no) <> carton_no THEN CONCAT(SUM(prevsum) OVER (ORDER BY type desc, product_id) + 1)
WHEN group_num <> 1 and Type = "mix" and LAG(carton_no) OVER (ORDER BY carton_no) = carton_no THEN CONCAT(LAG(carton_no) OVER (ORDER BY carton_no))
WHEN group_num <> 1 and Type = "single" THEN CONCAT(SUM(prevsum) OVER (ORDER BY type desc, product_id) + 1,'-', SUM(prevsum) OVER (ORDER BY type desc, product_id) + sum)
END numbering,
qty,
product_id,
type
FROM cte3
I think I solved the problem, but the code is working in Workbench, but not in fiddle. Any idea how to compress it more and not working in fiddle?