Part 3/7:
Database functions shine particularly when it comes to handling multiple criteria. Standard functions like SUMIFS are often limited because they require that all criteria be met (AND logic). On the contrary, database functions can flexibly manage both AND and OR conditions.
For example, to sum level one invoices dated between January 1, 2021, and March 31, 2021, users can specify the invoice type as "level one” alongside date criteria. Using the correct DSUM formula yields accurate results every time and allows for additional calculations such as averages and maximums too.