Defines group of date field. They are:
Years - Defines group field as ‘Years’ for date type field.Quarters - Defines group field as ‘Quarters’ for date type field.QuarterYear - Defines group field as ‘Quarter Year’ for date type field.Months - Defines group field as ‘Months’ for date type field.Days - Defines group field as ‘Days’ for date type field.Hours - Defines group field as ‘Hours’ for date type field.Minutes - Defines group field as ‘Minutes’ for date type field.Seconds - Defines group field as ‘Seconds’ for date type field.