Question

If I have table with a Date column (Date field) called created_date, with values like “9/2/2010 5:25:42 PM”.

I want to select all rows from a start_date to a end_date. However, the end_date may be null. In this case, I want to select all rows where created_date is greater than end_date.

Answer 1

Since toDate (which can be null) is a host variable, it’s easier than the solutions already given (which are all wrong in that regard, btw)

select * from mytable
  where created_date between v_fromdate
                         and nvl(v_todate, to_date('31.12.9999','dd.mm.yyyy'));