The following statement works under Fox 2.5/dos but fails under VFP 3.0

SELE * FROM sar a WHERE EXISTS ;
(SELE invno FROM invs b WHERE a.invno = b.invno ) ;
OR EXISTS ;
(SELE case_no FROM cases c WHERE c.case_no = a.caseno )

The following statement returns 1 record
SELE * FROM sar a WHERE EXISTS (SELE invno FROM invs b WHERE a.invno = b.invno )

The following statement returns 0 records
SELE * FROM sar a WHERE EXISTS (SELE case_no FROM cases c WHERE c.case_no = a.caseno )

This is the expected behavior. I tried the following statement and it also returns 0 records.
SELE * FROM sar a WHERE EXISTS (SELE invno FROM invs b WHERE a.invno = b.invno ) OR .F.

If the first part of the WHERE evaluates to .T. and it is OR'ed with .F. it should be a .T. statement.

???