SOLVED

# Ingested GB per month Query

Copper Contributor

# Ingested GB per month Query

Hi all.

I am trying to create a kql query to get the AVG of the ingested GBs per month (only billable data). This is the query im building up:

let currentmonth=monthofyear(now());
let month1=union *
| where TimeGenerated > ago(124d)
| where _IsBillable == "True"
| summarize TotalGBytes =round(sum(_BilledSize/(1024*1024*1024)),2)
by bin (TimeGenerated, 1d)
| summarize avg(TotalGBytes) by month;
let month2=union *
| where TimeGenerated > ago(124d)
| where _IsBillable == "True"
| summarize TotalGBytes =round(sum(_BilledSize/(1024*1024*1024)),2)
by bin (TimeGenerated, 1d)
| summarize avg(TotalGBytes) by month;
let month3=union *
| where TimeGenerated > ago(124d)
| where _IsBillable == "True"
| summarize TotalGBytes =round(sum(_BilledSize/(1024*1024*1024)),2)
by bin (TimeGenerated, 1d)
| summarize avg(TotalGBytes) by month;
month1 | union month2, month3

but getting "'summarize' operator: Failed to resolve scalar expression named 'month'" every time i run the query. Any idea how to solve this situation or any suggestion about how can i get the date i need?

4 Replies
best response confirmed by maynardsAH (Copper Contributor)
Solution

# Re: Ingested GB per month Query

The query will be many magnitudes faster if you use the Usage table (which has already aggregated the usage data), rather than trawling through a massive number of records.

If you are not worried about whole month, this is a simple query for each 30d period

``````Usage
| where TimeGenerated between ( startofmonth(now(),-3).. endofmonth(now(),-1) )
| summarize GBday = sum(Quantity)/1000 by bin(TimeGenerated, 30d)``````
TimeGenerated GBday
2021-03-02T00:00:00Z 516.7549875128676
2021-05-01T00:00:00Z 1060.202420264586
2021-04-01T00:00:00Z 520.8967723819818
2021-05-31T00:00:00Z 34.28783515715939
2021-01-31T00:00:00Z 2.716749379860088

or to have whole months, maybe this is a start:

``````union
(
Usage
| where TimeGenerated between ( startofmonth(now(),-3).. endofmonth(now(),-3) )
| summarize GBmonth=sum(Quantity)/1000 , min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated))
),
(
Usage
| where TimeGenerated between ( startofmonth(now(),-2).. endofmonth(now(),-2) )
| summarize GBmonth=sum(Quantity)/1000 , min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated))
),
(
Usage
| where TimeGenerated between ( startofmonth(now(),-1).. endofmonth(now(),-1) )
| summarize GBmonth=sum(Quantity)/1000 , min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated))
)``````

GBmonth min_TimeGenerated max_TimeGenerated month
519.4717368927277 2021-03-01T00:00:00Z 2021-03-31T23:00:00Z 3
520.8967723819818 2021-04-01T00:00:00Z 2021-04-30T23:00:00Z 4
1094.4902554217456 2021-05-01T00:00:00Z 2021-05-31T23:00:00Z 5

# Re: Ingested GB per month Query

Tnks a lot Clive, the query's numbers looks pretty good.

# Re: Ingested GB per month Query

Good morning,

I am also trying to find the same information out except that I need to narrow it down by subscription. The query listed runs perfectly for all subscriptions when I run it, however as soon I select 4 individual subscriptions I get an error "'where' operator: Failed to resolve table or column expression named 'Usage' Request id: 323b9391-1abc-4014-ac0c-5435d31b30df"

Could somebody please walk me through the process of how to get this table to populate? If I am correct, I think it means that the table "Usage" does not exist for these subscriptions therefore the query can't pull the data?

# Re: Ingested GB per month Query

Usage doesnt hold the subscription information you need, so you have to revert to the union * command, so it will be slower to run.

``````union
(
union *
| where _IsBillable == "True"
| where TimeGenerated between ( startofmonth(now(),-3).. endofmonth(now(),-3) )
| summarize GBmonth=round(sum(_BilledSize)/(1024*1024*1024),2), min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated)) by SubscriptionId
),
(
union *
| where TimeGenerated between ( startofmonth(now(),-2).. endofmonth(now(),-2) )
| summarize GBmonth=round(sum(_BilledSize)/(1024*1024*1024),2), min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated)) by SubscriptionId
),
(
union *
| where TimeGenerated between ( startofmonth(now(),-1).. endofmonth(now(),-1) )
| summarize GBmonth=round(sum(_BilledSize)/(1024*1024*1024),2), min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated)) by SubscriptionId
)``````

Remember its possible for there to be no SubscriptionID so you often get an empty column.   If you add in a filter for the subscription you want, it should look like this - please not I haven't tested this very well, so please test and amend.

``````let findSubIds = dynamic(['sub id 1','sub 2',' Sub 3','']);
union
(
union *
| where _IsBillable == "True"
| where TimeGenerated between ( startofmonth(now(),-3).. endofmonth(now(),-3) )
| where SubscriptionId in(findSubIds)
| summarize GBmonth=round(sum(_BilledSize)/(1024*1024*1024),2), min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated)) by SubscriptionId
),
(
union *
| where TimeGenerated between ( startofmonth(now(),-2).. endofmonth(now(),-2) )
| where SubscriptionId in(findSubIds)
| summarize GBmonth=round(sum(_BilledSize)/(1024*1024*1024),2), min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated)) by SubscriptionId
),
(
union *
| where TimeGenerated between ( startofmonth(now(),-1).. endofmonth(now(),-1) )
| where SubscriptionId in(findSubIds)
| summarize GBmonth=round(sum(_BilledSize)/(1024*1024*1024),2), min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated)) by SubscriptionId
)``````

1 best response

Accepted Solutions
best response confirmed by maynardsAH (Copper Contributor)
Solution

# Re: Ingested GB per month Query

The query will be many magnitudes faster if you use the Usage table (which has already aggregated the usage data), rather than trawling through a massive number of records.

If you are not worried about whole month, this is a simple query for each 30d period

``````Usage
| where TimeGenerated between ( startofmonth(now(),-3).. endofmonth(now(),-1) )
| summarize GBday = sum(Quantity)/1000 by bin(TimeGenerated, 30d)``````
TimeGenerated GBday
2021-03-02T00:00:00Z 516.7549875128676
2021-05-01T00:00:00Z 1060.202420264586
2021-04-01T00:00:00Z 520.8967723819818
2021-05-31T00:00:00Z 34.28783515715939
2021-01-31T00:00:00Z 2.716749379860088

or to have whole months, maybe this is a start:

``````union
(
Usage
| where TimeGenerated between ( startofmonth(now(),-3).. endofmonth(now(),-3) )
| summarize GBmonth=sum(Quantity)/1000 , min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated))
),
(
Usage
| where TimeGenerated between ( startofmonth(now(),-2).. endofmonth(now(),-2) )
| summarize GBmonth=sum(Quantity)/1000 , min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated))
),
(
Usage
| where TimeGenerated between ( startofmonth(now(),-1).. endofmonth(now(),-1) )
| summarize GBmonth=sum(Quantity)/1000 , min(TimeGenerated), max(TimeGenerated), month = datetime_part("month", min(TimeGenerated))
)``````

GBmonth min_TimeGenerated max_TimeGenerated month
519.4717368927277 2021-03-01T00:00:00Z 2021-03-31T23:00:00Z 3
520.8967723819818 2021-04-01T00:00:00Z 2021-04-30T23:00:00Z 4
1094.4902554217456 2021-05-01T00:00:00Z 2021-05-31T23:00:00Z 5