フリー問題

問題文

A developer sets up sampling for an aggregation functions test, and reads what a percentage sample reports. Which statement is accurate?

選択肢

1. An aggregation functions test leaves only the table filter option open for sampling, and the percentage option reports what is missing or unmatched but says nothing about the extra rows.
2. An aggregation functions test leaves only the WHERE clause option open for sampling, and the percentage option reports what is missing or unmatched but says nothing about the extra rows.
3. An aggregation functions test leaves only the table filter option open for sampling, and the percentage option reports what is missing or unmatched but says nothing about the empty rows.
4. An aggregation functions test leaves only the WHERE clause option open for sampling, and the percentage option reports what is missing or unmatched but says nothing about the empty rows.