orm.go
func (idx *Index) Not(row *PQLRowQuery) *PQLRowQuery {
	return NewPQLRowQuery(fmt.Sprintf("Not(%s)", row.serialize()), idx, row.Error())
}
func (idx *Index) Not(row *PQLRowQuery) *PQLRowQuery {
	return NewPQLRowQuery(fmt.Sprintf("Not(%s)", row.serialize()), idx, row.Error())
}
// Not creates a Not query.