cassandra timeuuid列显示缓冲区类型数据而不是字符串

虽然仍然很难理解您期望看到的内容,但这将返回您的 PostedDate 以更可读的格式:

SELECT DateOf(PostedDate) FROM facehq.timeline;

此外,随着数据大小的增长,未绑定查询将变得有问题且速度缓慢。因此,确保尽可能使用WHERE子句限定这样的查询。

我需要“posteddate”这样的结果:“f6ca25d0-ffa4-11e4-830a-b395dbb548cd”。

在我看来,你的问题就在你的节点上。js代码。如何执行查询?这个 Node.js driver documentation on the GitHub project page 有一个可能有帮助的示例:

client.stream('SELECT time, val FROM temperature WHERE station_id=', ['abc'])
  .on('readable', function () {
    //readable is emitted as soon a row is received and parsed
    var row;
    while (row = this.read()) {
      console.log('time %s and value %s', row.time, row.val);
    }
  })
  .on('end', function () {
    //stream ended, there aren't any more rows
  })
  .on('error', function (err) {
    //Something went wrong: err is a response error from Cassandra
  });

DataTax文档还提供了一个特定的示例 working with timeUUIDs :

client.execute('SELECT id, timeid FROM sensor', function (err, result) {
    assert.ifError(err);
    console.log(result.rows[0].timeid instanceof TimeUuid); // true
    console.log(result.rows[0].timeid instanceof Uuid); // true, it inherits from Uuid
    console.log(result.rows[0].timeid.toString());      // <- xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
    console.log(result.rows[0].timeid.getDate());       // <- Date stored in the identifier
});