如何使用节点 js 在 Cassandra 中向 select 查询（对于日期范围）插入动态值

Question

var 结果 = 'select message from people.users where event_time > ? and event_time < ? allow filtering';

client.execute(result,[startdate,enddate], function(err,result)

这没有显示：

GET /favicon.ico 500 17.785 ms - 386
{ [ResponseError: Expected 8 or 0 byte long for date (10)]
  name: 'ResponseError',
  message: 'Expected 8 or 0 byte long for date (10)',
  info: 'Represents an error message from the server',
  code: 8704,
  query: 'select message from people.users where event_time > ? and event_time <
 ? allow filtering' }

Answer 1

Cassandra 期望的类型（时间戳）与提供的值不匹配（看起来不是 Ecmascript Date）。

应该是这样的：

var startDate = new Date('2015-01-01');
var endDate = new Date();
var query = 'select message from people.users where event_time > ?' +
            ' and event_time < ? allow filtering';
client.execute(query, [startDate, endDate], { prepare: true}, callback);

此外，you should use the prepare flag for best performance and for accurate type mapping between Ecmascript and Cassandra。

如何使用节点 js 在 Cassandra 中向 select 查询（对于日期范围）插入动态值

How to insert dynamic values to select query (for a date range )in Cassandra using node js

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