Fix issue with change in copy "floating" datatype

asset.copy.floating changed from a bool to an int, which results in
an error like the following:

 operator does not exist: integer = boolean
 SELECT CASE floating WHEN TRUE THEN 'Y' ELSE NULL END FROM a...

This change attempts to accommodate this change in datatype in a
backward-compatible way.

Signed-off-by: Jeff Godin <jgodin@tadl.org>