product_id.store1, store2, store3), use a CASE WHEN statement to check if the store column matches the store name, then select the price.MAX function to ensure that if there are multiple entries for a product-store combination, only one value is returned.product_id to get one row per product..pivot() method on the products DataFrame.index='product_id', columns='store', and values='price' to reshape the DataFrame.product_id as the index and store names as column headers, with corresponding prices as values.
erDiagram
Products {
int product_id
enum store
int price
product_id store PK
}