The Order query subject includes provides the IDs of the order itself and the site visit during which it took place.
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The Line Item query subject provides the IDs of individual line items, the orders in which they were included, and whether the item was marked down.
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The Line Item Facts query subject provides information about an individual line item. Important items to note in this query subject are:
Net Sales—Revenue after adjustments due to discounts, taxes, and shipping, in the reporting currency.
Units—Quantity of this line item ordered.
Discounts—Sum of order-level discounts allocated to this line item + any discounts applied to the specific line item.
Markdown Discount—Discounts based on a sale or markdown.
The Order regular dimension has one hierarchy, with levels for the order and for line items within that order.
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