I still cant the result using this new field (may be I didn't create correctly). Anyway, I have found a longer way to get the result by using multiple queries. That is Query 1 to make a table (named Table 1) for Document 1 + Doc1ReceivedDate, then Query 2 to append Document 2 + Doc2ReceivedDate into Table1. Query 3 to group the data using Totals (using Group By and Count). Thank you for sharing on Totals.