updateFn = function() {
    var updatedDate = new Date(0);
    sampleRows[1].setBegin(updatedDate);
    sampleRows[3].setBegin(updatedDate);

    return db.
        update(table).
        where(table.name.in(
            [sampleRows[1].getName(), sampleRows[3].getName()])).
        set(table.begin, updatedDate).
        exec();
  }
Upadates the 'name' field of rows 1 and 3.
@return {!IThenable}