This command allows you to perform basic mathematical operations (add and subtract, for example) on any two columns for issues displayed. For example, you might want to subtract the Dev Actual field from the Dev Estimate field for the issues displayed in the Query Results pane in the Queries tab.
When you execute the command, a new column is added to the table to display the result of the calculation. You can name this column at the time you specify the calculation.
You can calculate any fields that have been defined in the schema as:
If the issues do not contain any fields with these data types, a warning message displays. Clear the message and choose fields with numeric values before trying the calculate operation again.