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PL-300 · Question #342

PL-300 Question #342: Real Exam Question with Answer & Explanation

The correct answer is D: DistinctCount('Sales' [Order ID]). DistinctCount('Sales' [Order ID]): count the distinct order IDs in the Sales table, ensuring that each order is only counted once, even if it has multiple order lines.

Submitted by the_admin· Apr 18, 2026

Question

You have a Power BI model that contains a table named Sales. The Sales table contains the following columns: - Order Line ID - Product ID - Unit Price - Order ID - Quantity Orders are uniquely identified by using the order ID and can have multiple order lines. Each order line within an order contains a different product ID. You need to write a DAX measure that counts the number of orders. Which formula should you use?

Options

  • ACount('Sales'[Order ID])
  • BCountA('Sales' [Order ID])
  • CCountRows('Sales')
  • DDistinctCount('Sales' [Order ID])

Explanation

DistinctCount('Sales' [Order ID]): count the distinct order IDs in the Sales table, ensuring that each order is only counted once, even if it has multiple order lines.

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