EAV querying and tables
-
12-11-2019 - |
Question
Now I have 4 tables:
table categories:
-id
-category
table products:
-id
-product
-price
-image
table attributes:
-id
-attribute
-product_id
table values:
-product_id
-attribute_id
-value
And I'm querying with:
SELECT `id`, `product`, `price`, `image` FROM `products` WHERE `category_id` = $category->id
Now I got array of products for this category and need to get it's properties: next query:
SELECT `products`.`id` AS `product_id`,
`attributes`.`attribute`,
`values`.`value`
FROM `products` LEFT JOIN `attributes` ON (`attributes`.`product_id` = `products`.`id`)
LEFT JOIN `values` ON (`values`.`product_id` = `products`.`id`
AND `values`.`attribute_id` = `attributes`.`id`)
WHERE `products`.`id` IN ($ids)
And it's get the attributes with values but I'm wondering about one thing:
If it's possible to get rid of 'product_id'
column in table attributes
and get attributes and values without that column? Now it's a whole bunch of duplicating attributes for example:
table attributes
-id 1
-attribute Weight
-product_id 1
-id 2
-attribute Weight
-product_id 2
While I want just:
-id 1
-attribute Weight
sorry for my english, if some part of my post needs more explanation please let me now
No correct solution
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