How to fetch the top two products for each product type?
rankx by category
a top n filter is already applied
rankx calculated column
rankx with filter
power pivot topn
Let's say I have two models looking like this:
class ProductType(models.Model): product_type = models.CharField(max_length=100) class Product(models.Model): name = models.CharField(max_length=200) slug = models.SlugField() product_type = models.ForeignKey(ProductType) score = models.PositiveIntegerField(default=0)
Now I want to fetch the top two products (the two with highest score) from each ProductType. So if I have Phones, Computers, TVs as ProductTypes I want the two best Phones, Computers, TVs.
As I don't even know how to do this in MySQL I've tried searching for the MySQL-solution but the ones I find is extremely complex and this doesn't feel like an extremely complex thing to do.
I am leaning towards making an own model for the top products and have a cronjob to fix this, but I'd like to see if there's an easier solution to this.
Well, you could make a method inside of the ProductType class that returns the top two results for its products:
class ProductType(models.Model): product_type = models.CharField(max_length=100) def TopTwoProducts(self): return self.product_set.order_by('-score')[0:2]
Then you would just do something like:
for type in ProductType.objects.all(): type.TopTwoProducts()
How to identify the top selling products by category on Amazon , In order to find the best products to sell on Amazon via FBA, it takes quite a lot of research The top selling product by category will have mostly or solely good reviews, even one the Product Ideas Tool to quickly retrieve, in one page, three types of data from all You could find it in the following two ways (Amazon India):. Well, you could make a method inside of the ProductType class that returns the top two results for its products: class ProductType(models.Model): product_type = models.CharField(max_length=100) def TopTwoProducts(self): return self.product_set.order_by('-score')[0:2] Then you would just do something like:
SQL-exercise/1_questions_and_solutions.sql at master · XD-DENG , 1.10 Select all the data from the products, including all the data for each product's manufacturer. select a.*, b.name from products a join Manufacturers b From Product table, retrieve for each group characterized by the type of the product three models with the lowest numbers. I.e. one should retrieve 3 computers, 3 laptops and 3 printers, the numbers of which are lower than of the rest models within each group.
Just filter out product type from Product model slice them like this -
product_type_list = ProductType.objects.value("id") for product_type in product_type_list: Product.objects.filter( product_type=product_type ).order_by("-score")[0:2]
one product in many categories, finding n number of products from , This example will give you 2 latest product_title based on latest product_ID for every category_title . SELECT a.category_title, c.product_title FROM categories a When we have a rank assigned to each city within its country, we can retrieve the required range: -- Get top 2 for each country SELECT city, country, population FROM (/*subquery above*/) ranked WHERE country_rank <= 2; -- Get the city with 3rd population for each country SELECT city, country, population FROM (/*subquery above*/) ranked WHERE
SQL SUBQUERIES: Display the name of each company, price for , Write a SQL query to display the name of each company, price for their Product Name Price Company Monitor 5000.00 Samsung DVD drive Previous: Write a SQL query to display the average price of the products which is What is the product name of the most popular product based on units solds? 2. Write a SQL statement to display a string "This is SQL Exercise, Practice and Solution". Go to the editor Click me to see the solution with pictorial presentation. 3. Write a query to display three numbers in three columns. Go to the editor Click me to see the solution with pictorial presentation. 4.
Database Schema for Multiple Types of Products, Now able to share attributes between Product Types The biggest problem with this setup is that we will end up with an extremely If you end up with a thousand products in your database and you have 40 attributes per product, then bogged down just trying to retrieve and update catalog information. I've simply used an image of one of the products from each category or subcategory, as you can see in the screenshot: Now let's take a look at how WooCommerce displays the product categories and products in archive pages. If you haven't already, go to WooCommerce > Settings, select the Products tab, and then choose the Display option.
QUERYING THE DATABASE: QUERIES and VIEWS, the result set is displayed as a table (columns and rows) Select from two tables: Example. Run the Orders Query (Orders Qry on the Query list): It lists all orders for all Alphabetical List of Products: Lists products that have not been discontinued and the product category, using all columns from Products (Products. However, if two or more products have the same prices as the most expensive product, then you miss the other most expensive products in the result set. To avoid this, you can use TOP 1 WITH TIES. It will include not only the first expensive product but also the second one, and so on. SQL Server SELECT TOP examples
- Smart solution, I like it! Thanks.
- i don't get it ... why you use for loop?
- You only use the for loop when it comes time to access the top two products (such as listing them in a template or whatever else).
- Thanks, I'll look into this tomorrow!