Azure Application Insights查询-如何计算总数百分比 [英] Azure Application Insights Query - How to calculate percentage of total

问题描述

我正在尝试在输出表中创建一行，以计算项目总数的百分比:

I'm trying to create a row in an output table that would calculate percentage of total items:

Something like this:
ITEM   |   COUNT   |   PERCENTAGE
item 1 |     4     |   80
item 2 |     1     |   20 

我可以很容易地获得一个包含ITEM和COUNT行的表，但是我不知道如何将总数(在这种情况下为5)作为一个数字来计算，因此我可以计算％列中的百分比.

I can easily get a table with rows of ITEM and COUNT, but I can't figure out how to get total (5 in this case) as a number so I can calculate percentage in column %.

someTable
| where name == "Some Name"
| summarize COUNT = count() by ITEM = tostring( customDimensions.["SomePar"])
| project ITEM, COUNT, PERCENTAGE = (C/?)*100 

有什么想法吗?谢谢.

推荐答案

创建这样的查询有点混乱.

It's a bit messy to create a query like that.

我已经基于AI中的customEvents表完成了它.因此，请看一下是否可以使其适应您的特定情况.

I've done it bases on the customEvents table in AI. So take a look and see if you can adapt it to your specific situation.

您必须创建一个包含记录总数的表，然后您必须联接该表.由于您只能在公共列上进行联接，因此需要一列始终具有相同值的列.我为此选择了appName.

You have to create a table that contains the total count of records, you then have to join this table. Since you can join only on a common column you need a column that has always the same value. I choose appName for that.

因此整个查询如下:

let totalEvents = customEvents
//  | where name contains "Opened form"
    | summarize count() by appName
    | project appName, count_ ;
customEvents
//  | where name contains "Opened form"
    | join kind=leftouter totalEvents  on appName
    | summarize count() by name, count_
    | project name, totalCount = count_ , itemCount = count_1,  percentage = (todouble(count_1) * 100 / todouble(count_))     

如果需要过滤器，则必须将其应用于两个表.

If you need a filter you have to apply it to both tables.

这将输出:

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