I have a query based on relation ship of two tables having common field (primary key) Called DV contain value like 11 of 04/2020, means sl no 11 of April 2020, I wanted to get the month name from DV by using formula MN: MonthName(Left(Right([DV],7),2)), but it gives error showing this DV could refer to both the table. In there any way to extract the data from this field.