フリー問題

問題文

A summary must report how many lines a query brings out, even where a chosen column holds no data. Which quantity should the summary use?

選択肢

1. The summary should count the summed price total that the query eventually brings out.
2. The summary should count the populated lone cell that the query eventually brings out.
3. The summary should count the distinct visible token that the query eventually brings out.
4. The summary should count the entire fetched record that the query eventually brings out.