Conditional SQL processing against host variables

Using something like the following statement, we take a pretty high
performance hit compared to writing multiple cursors for times when the
user has selected a wildcard (*ANY) as shown below. I suspect that the SQL
is actually looking for TUSER='*ANY' even though it will never find it, and
its not necessary. Is there a better way to condition this type of
operation? I'm aware of dynamic SQL, but its a bit of a pain for larger
statements.


/FREE
exec sql declare C1 cursor for
Select TWS
TUSER,
TTDTE
from TFILE
where (TWS = :Device or :Device = '*ANY')
And (TUser = :User or :User = '*ANY')
/END-FREE