[英]Get column names in its own column to render pie chart
我正在 Kusto 中編寫一個查詢來解析來自傳感器的心跳數據。 這是我寫的:
datatable(timestamp:datetime, healthycount:int, unhealthycount:int, origin:string)
[
datetime(1910-06-11), 10, 1, 'origin',
datetime(1910-05-11), 9, 2, 'origin'
]
| summarize latest = arg_max(timestamp, *) by origin
| project healthy = healthycount,
unhealthy = unhealthycount
這會輸出如下數據:
+--------------+----------------+
| healthy | unhealthy |
+--------------+----------------+
| 10 | 1 |
+--------------+----------------+
但是,我想將此數據表示為餅圖,但為此我需要以下格式的數據:
+----------------+-------+
| key | value |
+----------------+-------+
| healthy | 10 |
| unhealthy | 1 |
+----------------+-------+
是否有可能做到這一點? 我在尋找什么術語?
這是一種方法:
datatable(timestamp:datetime, healthycount:int, unhealthycount:int, origin:string)
[
datetime(1910-06-11), 10, 1, 'origin',
datetime(1910-05-11), 9, 2, 'origin'
]
| summarize arg_max(timestamp, *) by origin
| extend Pack = pack("healthycount", healthycount, "unhealthycount", unhealthycount)
| mv-expand kind=array Pack
| project key = tostring(Pack[0]), value = toint(Pack[1])
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