Sorting of null values in Powerhouse

[Dan Lambshead]

Hello,
 
  Does anyone know if there is an option to sort null values so that they
appear at the top (in Oracle, as they would if they were spaces, as
previously we had in indexed files) rather than the bottom. This is for
OpenVMS and Powerhouse version 8.40.D1.
  Of course we could do a define, setting nulls to spaces and sort on that,
but still wondering if there is an easier way.
 
Thanks
 
Dan
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