orm.go
func (f *Field) TopN(n uint64) *PQLRowQuery {
	q := NewPQLRowQuery(fmt.Sprintf("TopN(%s,n=%d)", f.name, n), f.index, nil)
	return q
}
func (f *Field) TopN(n uint64) *PQLRowQuery {
	q := NewPQLRowQuery(fmt.Sprintf("TopN(%s,n=%d)", f.name, n), f.index, nil)
	return q
}
func ( f * Field ) TopN ( n uint64 ) * PQLRowQuery { q := NewPQLRowQuery ( fmt . Sprintf ( " " , f . name , n ) , f . index , nil ) return q }
// TopN creates a TopN query with the given item count.
// Returns the id and count of the top n rows (by count of columns) in the field.
TopN creates a TopN query with the given item count . Returns the id and count of the top n rows ( by count of columns ) in the field .