KQL：按时移聚合行并获取最近行的值

Question

我觉得看数据更容易。我们有一个应用程序可以跟踪 Intranet 中的所有用户交互。

eventType	pageUrl	timestamp	timeOnPageMs
pageEvent	https://url1.com/	2021-11-05T06:10:11.591Z	0
pageEvent	https://url1.com/	2021-11-05T06:20:11.591Z	23123
pageEvent	https://url2.com/	2021-11-05T06:11:11.591Z	0
pageEvent	https://url2.com/	2021-11-05T06:30:11.591Z	23123

打开页面事件被识别为有timeOnPageMs=0，否则为关闭页面事件。

我想定义一个提取所有页面打开事件的查询，但带有页面关闭事件的 timeOnPageMs。

eventType	pageUrl	timestamp	timeOnPageMs
pageEvent	https://url1.com/	2021-11-05T06:10:11.591Z	23123
pageEvent	https://url2.com/	2021-11-05T06:11:11.591Z	33123

我尝试使用 UDF 来查找所需的值，但似乎不可能如上次回复所述here。

在此先感谢任何愿意提供帮助的人！

贾科莫 S.S.

Answer 1

您需要一个 SessionId 来关联事件（以便能够处理同一个 URL 有多个打开事件，然后是同一个 URL 的多个关闭事件的情况） .

然后这就是你解决它的方法：

datatable(eventType:string, pageUrl:string, timestamp:datetime, timeOnPageMs:long, sessionId:string)
[
    "pageEvent","https://url1.com/",datetime(2021-11-05T06:10:11.591Z),0,"id1",
    "pageEvent","https://url1.com/",datetime(2021-11-05T06:10:15.591Z),0,"id2",
    "pageEvent","https://url1.com/",datetime(2021-11-05T06:11:12.591Z),1500,"id2",
    "pageEvent","https://url1.com/",datetime(2021-11-05T06:20:11.591Z),23123,"id1",
    "pageEvent","https://url2.com/",datetime(2021-11-05T06:11:11.591Z),0,"id3",
    "pageEvent","https://url2.com/",datetime(2021-11-05T06:30:11.591Z),23123,"id3"
]
| summarize take_any(eventType, pageUrl), min(timestamp), max(timeOnPageMs) by sessionId

结果：

sessionId	eventType	pageUrl	min_timestamp	max_timeOnPageMs
id1	pageEvent	https://url1.com/	2021-11-05 06:10:11.5910000	23123
id2	pageEvent	https://url1.com/	2021-11-05 06:10:15.5910000	1500
id3	pageEvent	https://url2.com/	2021-11-05 06:11:11.5910000	23123

KQL：按时移聚合行并获取最近行的值

KQL: aggregate row by time shift and get value of the more recent row

kql

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