Crystal Reports:
Use EQV to Do the Opposite of XOR
See also:
Use XOR to Perform Exclusive OR
You can use the XOR Boolean operator to
combine two Boolean clauses and return TRUE if one of the clauses is
true--but false is both or neither are true. If you require the opposite
result use the EQV operator inside your formula.
That is, use EQV if you want records that
meet both or neither criteria, but do not want records that meet one or the
other criteria.
TRUE Eqv TRUE returns a value of TRUE
FALSE Eqv TRUE returns a value of FALSE
TRUE Eqv FALSE returns a value of FALSE
FALSE Eqv FALSE returns a value of TRUE
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