code: func (h *Handle) SaveMetaToStorage(tableID, count, modifyCount int64) (err error) {
  	h.mu.Lock()
  	defer h.mu.Unlock()
  	ctx := context.TODO()
  	exec := h.mu.ctx.(sqlexec.SQLExecutor)
  	_, err = exec.Execute(ctx, "begin")
  	if err != nil {
  		return errors.Trace(err)
  	}
  	defer func() {
  		err = finishTransaction(ctx, exec, err)
  	}()
  	txn, err := h.mu.ctx.Txn(true)
  	if err != nil {
  		return errors.Trace(err)
  	}
  	var sql string
  	version := txn.StartTS()
  	sql = fmt.Sprintf("replace into mysql.stats_meta (version, table_id, count, modify_count) values (%d, %d, %d, %d)", version, tableID, count, modifyCount)
  	_, err = exec.Execute(ctx, sql)
  	return
  }
docs: // SaveMetaToStorage will save stats_meta to storage.