The raw dataset consists of 9 different columns
date - is the timestamp when the purchase was done
id_doc - receipt's id
id_order - is the order's id. Order's id is equal to 0 when the purchase was done offline, otherwise online.
id_card - is the unique id of customer.
id_tov - is the unique id of product's id
id_kontr - distributor's id
quantity - the amount of the same product in receipt which was purchased
sum - price of the product
is_green - shows that product is under discount or not