The text provides a detailed explanation of how to use views with compound keys in Couchbase to sort and group data efficiently. By converting timestamps into arrays, known as "compound keys," views can be queried at different group levels to aggregate and count data based on specific time intervals, such as year, month, or day. The process involves using a Map function to emit data as string-based arrays, which requires careful handling of string comparisons and zero-padding to ensure accurate sorting. The explanation highlights the importance of understanding string handling and Unicode collation for effective use of compound keys, as well as the potential for using them beyond views, such as in range queries. Additionally, the text emphasizes the distinction between string and integer comparisons in this context, underscoring the need to consider these differences when designing queries.