Inner Join table with respect to a maximum value

26,876
SELECT  a.ID SellerID,
        a.Shop_Name,
        b.ID ProductID,
        b.pageViews,
        b.title,
        b.Price
FROM    seller a
        INNER JOIN Products b
            ON a.id = b.seller_ID
        INNER JOIN
        (
            SELECT  seller_ID, MAX(pageViews) max_view
            FROM    products
            GROUP   BY seller_ID
        ) c ON  b.seller_ID = c.seller_ID AND
                b.pageViews = c.max_View
WHERE   a.handpicked = 'Y' AND a.active = 'Y'

OUTPUT

╔══════════╦═══════════╦═══════════╦═══════════╦═════════╦═══════╗
║ SELLERID ║ SHOP_NAME ║ PRODUCTID ║ PAGEVIEWS ║  TITLE  ║ PRICE ║
╠══════════╬═══════════╬═══════════╬═══════════╬═════════╬═══════╣
║        1 ║ mitienda  ║         2 ║        30 ║ bufanda ║ $25   ║
║        3 ║ new_world ║         6 ║         6 ║ ropa    ║ $13   ║
╚══════════╩═══════════╩═══════════╩═══════════╩═════════╩═══════╝
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rocket_boomerang_19
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rocket_boomerang_19

Starting my own webpage for a startup and am diving into the world of coding.

Updated on July 19, 2022

Comments

  • rocket_boomerang_19
    rocket_boomerang_19 almost 2 years

    I'm trying to write a MySQL query where I pull a seller's info and her most popular product. This is determined by the product with the most page views, i.e. MAX(page_views).

    The query below though is just pulling a random product and not the one with the most page views.

    "SELECT 
         seller.id, seller.language, seller.shop_name,seller.story, 
         seller.eng_story, product.id, product.image_thumb, product.title, 
         product.eng_title, product.price, MAX(product.page_views) 
      FROM seller 
         INNER JOIN product ON seller.id=product.seller_id 
      WHERE seller.handpicked='y' AND seller.shop_active='y' 
      GROUP BY seller.id 
      ORDER BY product.page_views
      LIMIT 0,5"
    

    Or better said, page_views is in fact the correct number, but how do I get the other product fields (id, image, title, etc.) to be with respect to the product with the most page views.

    TABLE DATA:

    SELLER:

    id | language | shop_Name | story     | eng_story   | handpicked | active
    1  |   1      | mitienda  | hola mundo| Hello world | Y          | Y
    2  |   1      | sisenor   | bonita    | beautiful   | N          | Y
    3  |   2      | new_world | mi vida   | my life     | Y          | Y
    

    PRODUCTS:

    id | seller_id | image_thumb | title    | eng_title | price | page Views
    1  |  1        | /images/..  | sombrero | hat       | $5    | 10
    2  |  1        | /images/..  | bufanda  | scarf     | $25   | 30
    3  |  2        | /images/..  | arte     | art       | $15   | 15
    4  |  3        | /images/..  | joyeria  | jewlery   | $10   | 1
    5  |  2        | /images/..  | canasta  | basket    | $21   | 13
    6  |  3        | /images/..  | ropa     | clothes   | $13   | 6
    

    Expected Result (condensed):

    seller.id | shop_name | product.id | pageviews | title    | price
      1       |  miteinda |     2      |    30     |  bufanda | $25
      3       |  newworld |     6      |     6     |  ropa    | $13
    

    The result should list out sellers information who have been handpicked and their most popular product by pageviews The sellers are ordered by pageviews with a limit of 5 sellers total.