Creating table/columns combinations using SQL Query or Laravel SQL Query Builder

Question

I have an existing scheme for products variations.

I want to create a combination of each production time, quantities and variation options.

I will create a selection form by accessing the quantities, production times, variation and variation options from the product.

table_groups

+------------+
| id | title |
+----+-------+
| 1  | rug   |
+----+-------+

table_days

+----+----------+------+
| id | group_id | day  |
+----+----------+------+
| 1  | 1        | 1    |
| 2  | 1        | 2    |
| 3  | 1        | 3    |
+----+----------+------+

table_quantities

+----+----------+-----------+
| id | group_id | quantity  |
+----+----------+-----------+
| 1  | 1        | 100       |
| 2  | 1        | 200       |
| 3  | 1        | 300       |
| 4  | 1        | 400       |
+----+----------+-----------+

table_attributes

+----+----------+-----------+
| id | group_id | title     |
+----+----------+-----------+
| 1  | 1        | Color     |
| 2  | 1        | Size      |
+----+----------+-----------+

table_attribute_values

+----+----------+--------------+--------+
| id | group_id | attribute_id | title  |
+----+----------+--------------+--------+
| 1  | 1        | 1            | Red    |
| 2  | 1        | 1            | Yellow |
| 3  | 1        | 1            | Black  |
| 4  | 1        | 2            | Small  |
| 5  | 1        | 2            | Medium |
+----+----------+--------------+--------+

I prepared an example schema. However, I am not getting the result I want.

SQL Fiddle

This much I did do:

SELECT
       GROUP_CONCAT(DISTINCT days_group) as days_list,
       GROUP_CONCAT(DISTINCT quantities_group SEPARATOR ',') as quantities_list,
       GROUP_CONCAT(DISTINCT attribute_values_group SEPARATOR ',') as attribute_values_list
FROM
    table_groups
    LEFT JOIN (
            SELECT days.day, days.group_id,
                   GROUP_CONCAT(days.day) as days_group
            FROM table_days days GROUP BY days.id
        ) joindays ON joindays.group_id = table_groups.id

    LEFT JOIN (
            SELECT quantities.quantity, quantities.group_id,
                   GROUP_CONCAT(quantities.quantity) as quantities_group
            FROM table_quantities quantities GROUP BY quantities.id
        ) joinquantities ON joinquantities.group_id = table_groups.id

    LEFT JOIN table_attributes attributes ON attributes.group_id = table_groups.id

    LEFT JOIN (
            SELECT attribute_id, group_id,
                   GROUP_CONCAT(attribute_values.title) as attribute_values_group
            FROM table_attribute_values attribute_values
            GROUP BY attribute_values.attribute_id, attribute_values.id
        ) joinattributevalues ON joinattributevalues.attribute_id = attributes.id

GROUP BY joinattributevalues.attribute_id;

Query Results:

+---------------+-----------+-----------------+-----------------------+
| group_id      | days_list | quantities_list | attribute_values_list |
+---------------+-----------+-----------------+-----------------------+
| 1             | 1,2,3     | 100,200,300,400 | Red,Yellow,Black      |
| 2             | 1,2,3     | 100,200,300,400 | Small,Medium          |
+---------------+-----------+-----------------+-----------------------+

The correct result I want should be as follows. Can you help with this?

+-----------+---------------------+--------+
| group_id  | combinations        | price  |
+-----------+---------------------+--------+
| 1         | 1-100-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 1-100-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 1-100-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 1-100-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 1-100-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 1-100-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 1-200-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 1-200-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 1-200-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 1-200-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 1-200-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 1-200-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 1-300-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 1-300-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 1-300-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 1-300-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 1-300-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 1-300-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 1-400-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 1-400-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 1-400-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 1-400-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 1-400-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 1-400-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 2-100-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 2-100-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 2-100-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 2-100-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 2-100-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 2-100-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 2-200-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 2-200-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 2-200-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 2-200-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 2-200-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 2-200-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 2-300-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 2-300-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 2-300-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 2-300-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 2-300-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 2-300-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 2-400-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 2-400-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 2-400-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 2-400-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 2-400-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 2-400-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 3-100-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 3-100-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 3-100-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 3-100-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 3-100-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 3-100-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 3-200-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 3-200-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 3-200-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 3-200-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 3-200-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 3-200-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 3-300-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 3-300-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 3-300-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 3-300-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 3-300-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 3-300-Black-Medium  |        |
+-----------+---------------------+--------+
| 1         | 3-400-Red-Small     |        |
+-----------+---------------------+--------+
| 1         | 3-400-Red-Medium    |        |
+-----------+---------------------+--------+
| 1         | 3-400-Yellow-Small  |        |
+-----------+---------------------+--------+
| 1         | 3-400-Yellow-Medium |        |
+-----------+---------------------+--------+
| 1         | 3-400-Black-Small   |        |
+-----------+---------------------+--------+
| 1         | 3-400-Black-Medium  |        |
+-----------+---------------------+--------+

Note: There is no limit for the number of groups, attributes, and attributes values. The example result might be something like this:

Attributes:

+-------+------+-------+--------+
| Color | Size | Model | Gender |
+-------+------+-------+--------+

Combinations:

+------------------------------+
| 1-100-Red-Small-Model 1-Male |
+------------------------------+
| 1-100-Red-Small-Model 2-Male |
+------------------------------+

It is not necessary to do it with SQL query. We can also do this with the Laravel Query Builder method.

Thanks in advance for your help.

Check the sample SQL Fiddle

Is MySQL 5.6 a requirement, or do you have access to MySQL 8.0 and/or other DBs? — CoffeeNeedCoffee, Nov 16 '20 at 21:47
@CoffeeNeedCoffee My first choice is mysql 5.7 but if necessary I will using it in mysql 8. It can also be done with Laravel query builder methods. I haven't slept for a many days. It would be a luxury for me to choose the mysql version:) — Mert Aşan, Nov 16 '20 at 21:53
@CoffeeNeedCoffee it will be useful to examine this question as well https://stackoverflow.com/q/64851724/6320082 — Mert Aşan, Nov 16 '20 at 21:59

score 3 · Accepted Answer · answered Nov 16 '20 at 23:17

This should do it. Will not function in mysql 5.7 because recursive CTEs weren't included until later, but this will allow you to have a variable number of attributes and attribute_values per group_id. The fiddle is here.

with recursive allAtts as (
  /* Get our attribute list, and format it if we want; concat(a.title, ':', v.title) looks quite nice */
  SELECT 
    att.group_id,
    att.id,
    CONCAT(v.title) as attDesc,
    dense_rank() over (partition by att.group_id order by att.id) as attRank
FROM table_attributes att 
INNER JOIN table_attribute_values v 
    ON v.group_id = att.group_id 
    AND v.attribute_id = att.id 
 ),
 cte as (
 /* Recursively build our attribute list, assuming ranks are sequential and we properly linked our group_ids */
    select group_id, id, attDesc, attRank from allAtts WHERE attRank = 1
   
         union all 
   
    select 
        allAtts.group_id, 
        allAtts.id, 
        concat_ws('-', cte.attDesc, allAtts.attDesc) as attDesc,
        allAtts.attRank
   from cte 
   join allAtts ON allAtts.attRank = cte.attRank +1
      AND cte.group_id = allAtts.group_id
)
   
/* Our actual select statement, which RIGHT JOINs against the table_groups 
   so we don't lose entries w/o attributes */   
select 
    grp.id,
    concat_ws('-', d.day, qty.quantity, cte.attDesc) as combinations
from cte 
inner join (select group_id, max(attRank) as attID
            from cte
            group by group_id) m on cte.group_id = m.group_id and m.attID = cte.attrank
RIGHT JOIN table_groups grp ON grp.id = cte.group_id 
LEFT JOIN table_days d on grp.id = d.group_id
LEFT JOIN table_quantities qty on grp.id = qty.group_id;

thank you very much! i will now upgrade the mysql version. and then i'll test it right away. — Mert Aşan, Nov 16 '20 at 23:27

Creating table/columns combinations using SQL Query or Laravel SQL Query Builder

1 Answers1

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