Prestashop combinations prices and images

great snippet

 
  SELECT 
    p.id_product,
    pa.reference,
    pl.name,
    @id_image := ifnull(pai.id_image, pi.id_image) as id_image,
    concat('http://',
            ifnull(shop_domain.value, 'domain'),
            '/img/p/',
            if(CHAR_LENGTH(@id_image) >= 5,
                concat(SUBSTRING(@id_image from - 5 FOR 1), '/'),
                ''),
            if(CHAR_LENGTH(@id_image) >= 4,
                concat(SUBSTRING(@id_image from - 4 FOR 1), '/'),
                ''),
            if(CHAR_LENGTH(@id_image) >= 3,
                concat(SUBSTRING(@id_image from - 3 FOR 1), '/'),
                ''),
            if(CHAR_LENGTH(@id_image) >= 2,
                concat(SUBSTRING(@id_image from - 2 FOR 1), '/'),
                ''),
            if(CHAR_LENGTH(@id_image) >= 1,
                concat(SUBSTRING(@id_image from - 1 FOR 1), '/'),
                ''),
            @id_image,
            '.jpg') as image_url,
    GROUP_CONCAT(DISTINCT (pal.name)
        SEPARATOR ', ') as combination,
    ROUND(p.price, 2) as price,
    p.active,
    pq.quantity
FROM
    ps_product p
        LEFT JOIN
    ps_product_attribute pa ON (p.id_product = pa.id_product)
        LEFT JOIN
    ps_stock_available pq ON (p.id_product = pq.id_product
        AND pa.id_product_attribute = pq.id_product_attribute)
        LEFT JOIN
    ps_product_lang pl ON (p.id_product = pl.id_product)
        LEFT JOIN
    ps_product_attribute_combination pac ON (pa.id_product_attribute = pac.id_product_attribute)
        LEFT JOIN
    ps_attribute_lang pal ON (pac.id_attribute = pal.id_attribute)
        LEFT JOIN
    ps_product_attribute_image pai ON (pa.id_product_attribute = pai.id_product_attribute)
        LEFT JOIN
    ps_image pi ON p.id_product = pi.id_product
        LEFT JOIN
    ps_configuration shop_domain ON shop_domain.name = 'PS_SHOP_DOMAIN'
WHERE
    pl.id_lang = (
        SELECT 
            id_lang
        FROM
            ps_lang
        ORDER BY id_lang ASC
        LIMIT 1
    )
        AND
    pal.id_lang = pl.id_lang
GROUP BY pa.reference
ORDER BY p.id_product , pac.id_attribute;

Original discussion URL
https://www.prestashop.com/forums/topic/329498-export-all-products-including-combinations/page-2