You can perform advanced calculations in the SAP Query tool by using local fields, and you do not need any programming skills to do so.
You can utilize multiple calculated fields that reference each other.
You can automatically insert a system value, such as the date, into a report by using a local field, or you can insert it as a dynamic entry on the selection screen.
You can utilize multiple calculated fields in conjunction with dynamic entry fields on the selection screen to create even more complex calculations.
You can have up to three hard-set conditions (A, B, or C) plus an otherwise condition when using complex calculations.