internal

type Region struct {
	Begin int
	End   int
}

type Session struct {
	Rows          []Region
	Data          []byte
	Decoder       *decoder.Decoder
	Pointers      []interface{}
	ValuePointers []reflect.Value
	DestTypes     []reflect.Type
	XTypes        []xunsafe.Type
	Columns       []string
	Schema        *bigquery.TableSchema
	TotalRows     uint64
}