func (r *rows) Close() error {
	r.data = nil
	return nil
}
Close implements driver.Rows.Close method.
package client
import (
	"database/sql/driver"
	"io"
	"strings"
	"github.com/SQLess/SQLess/types"
)
type rows struct {
	columns []string
	types   []string
	data    []types.ResponseRow
}
func newRows(res *types.Response) *rows {
	return &rows{
		columns: res.Payload.Columns,
		types:   res.Payload.DeclTypes,
		data:    res.Payload.Rows,
	}
}
func (r *rows) Columns() []string {
	return r.columns[:]
}