grafana - AWS Timestream 错误中的聚合计数导致错误

Question

我将遥测推送到 AWS 时间流：

测量值::varchar	知识产权	时间	测量名称
测试.html	192.168.1.100	2021-05-25 14:27:45	命中
废话.html	192.168.1.101	2021-05-25 14:27:45	命中
测试.html	192.168.1.102	2021-05-25 14:27:46	命中

我希望在时间流中显示数据的聚合，向我显示每小时每个 uri 的点击次数。

测量值::varchar	数数	时间
测试.html	2	2021-05-25 14:00
废话.html	1	2021-05-25 14:00

我正在尝试使用：

SELECT measure_value::varchar as URIs, CREATE_TIME_SERIES(time, measure_value::varchar) AS served FROM $__database.$__table WHERE $__timeFilter group by measure_value::varchar

但我得到了错误：

ValidationException: Duplicate timestamps are not allowed in a timeseries.

我使用了错误的功能还是我的数据有误？

====================

尝试@berto99 的解决方案...我得到：

SELECT measure_value::varchar AS URIs, date_trunc('hour', time) AS hour, count(measure_value::varchar) as queries
FROM $__database.$__table
WHERE $__timeFilter
GROUP BY measure_value::varchar, date_trunc('hour', time)

======================

更新#2：

到达那里，仍然没有 100% 到达那里。

SELECT measure_value::varchar AS URIs, bin(time, 15m) AS hour, count(measure_value::varchar) as queries
FROM $__database.$__table
WHERE $__timeFilter
GROUP BY measure_value::varchar, bin(time, 15m) order by hour

Answer 1

我知道可能有更好的方法可以做到这一点，但是像这样：

SELECT measure_value::varchar AS URIs, date_trunc('hour', time) AS time
FROM $__database.$__table
WHERE $__timeFilter
GROUP BY measure_value::varchar, date_trunc('hour', time)
ORDER BY date_trunc('hour', time)

也许您还必须调整时区，date_trunc('hour', time at time zone '-X')其中 X 是您的时区

Answer 2

最后结合@Berto99 的建议和更多地挖掘stackoverflow - TimeStream + Grafana: not Recognizing series in data让这一切工作。

您必须将 Berto99 的建议放入子查询中，然后通过CREATE_TIME_SERIES. 最后的查询结果是：

WITH binned_query AS (
SELECT measure_value::varchar AS URIs, bin(time, 15m) AS bin_time, count(measure_value::varchar) as queries
FROM $__database.$__table
WHERE $__timeFilter
GROUP BY measure_value::varchar, bin(time, 15m) order by bin_time
)
SELECT URIs, CREATE_TIME_SERIES(bin_time,queries) as Endpoint
FROM binned_query 
GROUP BY URIs

从使用更改为date_trunc，bin因为它使您可以更灵活地进行 15 分钟的间隔。

美丽的图表：