code: function(index, value) {
          var idx_name = ydn.db.base.PREFIX_MULTIENTRY +
              table.getName() + ':' + index.getName();
          var idx_sql = insert_statement + goog.string.quote(idx_name) + ' (' +
              table.getSQLKeyColumnNameQuoted() + ', ' +
              index.getSQLIndexColumnNameQuoted() + ') VALUES (?, ?)';
          var idx_params = [ydn.db.schema.Index.js2sql(key, table.getType()),
                ydn.db.schema.Index.js2sql(value, index.getType())];
  
          /**
           * @param {SQLTransaction} tx transaction.
           * @param {SQLResultSet} rs results.
           */
          var idx_success = function(tx, rs) {
  
          };
          /**
           * @param {SQLTransaction} tr transaction.
           * @param {SQLError} error error.
           * @return {boolean} true to roll back.
           */
          var idx_error = function(tr, error) {
            goog.log.warning(me.logger, 'multiEntry index insert error: ' + error.message);
            return false;
          };
  
          goog.log.finest(me.logger, req.getLabel() + ' multiEntry ' + idx_sql +
              ' ' + idx_params);
          tx.executeSql(idx_sql, idx_params, idx_success, idx_error);
        }
docs: Insert a row for each multi entry index.
  @param {ydn.db.schema.Index} index multi entry index.
  @param {number} value index at.