Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Calling all Data Engineers! Fabric Data Engineer (Exam DP-700) live sessions are back! Starting October 16th. Sign up.

Reply
Anonymous
Not applicable

Counting number of entries per second

Hi

I need to group and count the number of values that occur within 1 second. I have a date_time down to nano seconds but its only showing the shortest time period of day. I also dont know how to group the data and aggregate the number of values within 1 second. Can someone help?

 

The data looks something like (i wont write in nanoseconds to make it easier to read)

 

date_time       value

0                    1.1

0.2                 3.4

0.4                 1.5 

0.6                 2.6 

0.8                 2.1

1.0                 8.3

 

So the result from this should be one data point 

 

second    hits/second

1              6

1 ACCEPTED SOLUTION

Refer

New Column = if(TRUNC(time_mill_sec[date_time],0)=time_mill_sec[date_time],time_mill_sec[date_time],TRUNC(time_mill_sec[date_time],0)+1)

Screenshot 2020-01-03 17.31.04.pngScreenshot 2020-01-03 17.30.53.pngScreenshot 2020-01-03 17.31.12.png

Share with Power BI Enthusiasts: Full Power BI Video (20 Hours) YouTube
Microsoft Fabric Series 60+ Videos YouTube
Microsoft Fabric Hindi End to End YouTube

View solution in original post

5 REPLIES 5
amitchandak
Super User
Super User

Create a new column

new Col = TRUNC(date_time,0)  +1

 

You can use this column for grouping.  and count the occurrences.

 

Appreciate your Kudos. In case, this is the solution you are looking for, mark it as the Solution. In case it does not help, please provide additional information and mark me with @
Thanks. My Recent Blog -
https://community.powerbi.com/t5/Community-Blog/HR-Analytics-Active-Employee-Hire-and-Termination-tr...
https://community.powerbi.com/t5/Community-Blog/Power-BI-Working-with-Non-Standard-Time-Periods/ba-p...
https://community.powerbi.com/t5/Community-Blog/Comparing-Data-Across-Date-Ranges/ba-p/823601

 

 

Share with Power BI Enthusiasts: Full Power BI Video (20 Hours) YouTube
Microsoft Fabric Series 60+ Videos YouTube
Microsoft Fabric Hindi End to End YouTube
Anonymous
Not applicable

Hi @amitchandak 

Thanks for the reply, I am new to powerbi so a bit confused. I have created the new column and put the new column as the x-axis in a scatter plot. I then chose my other values as the y and Counted. However it just shows a single point. How can I calculate the occurances per second? The new column with truncated values just gives a single number

Refer

https://www.dropbox.com/s/17k61u0nmml5arl/time_mill_sec.pbix?dl=0

 

You need to add code handle 0.

 

Appreciate your Kudos. In case, this is the solution you are looking for, mark it as the Solution. In case it does not help, please provide additional information and mark me with @
Thanks. My Recent Blog -
https://community.powerbi.com/t5/Community-Blog/HR-Analytics-Active-Employee-Hire-and-Termination-tr...
https://community.powerbi.com/t5/Community-Blog/Power-BI-Working-with-Non-Standard-Time-Periods/ba-p...
https://community.powerbi.com/t5/Community-Blog/Comparing-Data-Across-Date-Ranges/ba-p/823601

Share with Power BI Enthusiasts: Full Power BI Video (20 Hours) YouTube
Microsoft Fabric Series 60+ Videos YouTube
Microsoft Fabric Hindi End to End YouTube
Anonymous
Not applicable

Hi 

Unfortunately I cant access the link (it is blocked at my office)

 

Refer

New Column = if(TRUNC(time_mill_sec[date_time],0)=time_mill_sec[date_time],time_mill_sec[date_time],TRUNC(time_mill_sec[date_time],0)+1)

Screenshot 2020-01-03 17.31.04.pngScreenshot 2020-01-03 17.30.53.pngScreenshot 2020-01-03 17.31.12.png

Share with Power BI Enthusiasts: Full Power BI Video (20 Hours) YouTube
Microsoft Fabric Series 60+ Videos YouTube
Microsoft Fabric Hindi End to End YouTube

Helpful resources

Announcements
FabCon Global Hackathon Carousel

FabCon Global Hackathon

Join the Fabric FabCon Global Hackathon—running virtually through Nov 3. Open to all skill levels. $10,000 in prizes!

September Power BI Update Carousel

Power BI Monthly Update - September 2025

Check out the September 2025 Power BI update to learn about new features.

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.

Top Solution Authors
Top Kudoed Authors