Power BI is turning 10! Tune in for a special live episode on July 24 with behind-the-scenes stories, product evolution highlights, and a sneak peek at what’s in store for the future.
Save the dateEnhance your career with this limited time 50% discount on Fabric and Power BI exams. Ends August 31st. Request your voucher.
Hi there
I am trying to count the instances of Covid over a period of time.
There are two piece to this.
1.) how do I count the instances where the first instance would be labelled 1 and the second as 2, third as 3 and so on. Using earlier seems to mark them all as the highest count. so the first second and third would all show a count of 3.
2.) I'd like to do this to see if the number of multiple instances has changed year on year. So count the first one in the year as 1, second as 2 then the next year restart the count at 1, and so on.
My data is laid out as follows
From Date | UNID |
19/03/2020 | F005F |
15/11/2020 | F0040 |
20/01/2021 | Y8F44 |
01/03/2021 | F00FF |
04/03/2021 | F0078 |
09/06/2021 | Y8F08 |
30/06/2021 | F005F |
20/07/2021 | a0588 |
30/07/2021 | F00FF |
14/09/2021 | F00FF |
25/09/2021 | F00FF |
19/11/2021 | F0090 |
12/12/2021 | Y8F44 |
03/01/2022 | a058F |
23/05/2022 | a0584 |
01/06/2022 | a0588 |
05/07/2022 | F00FF |
11/07/2022 | F0078 |
I have a caelndar (simple just every day of the year) joined on from date 1-Many.
This would be my expected result.
expected result | |||
Total Count | In Year Count | ||
From Date | UNID | ||
19/03/2020 | F005F | 1 | 1 |
15/11/2020 | F0040 | 1 | 1 |
20/01/2021 | Y8F44 | 1 | 1 |
01/03/2021 | F00FF | 1 | 1 |
04/03/2021 | F0078 | 1 | 1 |
09/06/2021 | Y8F08 | 1 | 1 |
30/06/2021 | F005F | 2 | 1 |
20/07/2021 | a0588 | 1 | 1 |
30/07/2021 | F00FF | 2 | 2 |
14/09/2021 | F00FF | 3 | 3 |
25/09/2021 | F00FF | 4 | 4 |
19/11/2021 | F0090 | 1 | 1 |
12/12/2021 | Y8F44 | 2 | 2 |
03/01/2022 | a058F | 1 | 1 |
23/05/2022 | a0584 | 1 | 1 |
01/06/2022 | a0588 | 2 | 1 |
05/07/2022 | F00FF | 5 | 1 |
11/07/2022 | F0078 | 2 | 1 |
From this I would then like to be able to count the number of people with multiple instances in each year and the average number of instances - which should be pretty straight forward if this is a calculated column.
Solved! Go to Solution.
Hi,
Please check the below picture and the attached pbix file.
Total count CC =
COUNTROWS (
FILTER (
Data,
Data[UNID] = EARLIER ( Data[UNID] )
&& Data[From Date] <= EARLIER ( Data[From Date] )
)
)
In year count CC =
COUNTROWS (
FILTER (
Data,
Data[UNID] = EARLIER ( Data[UNID] )
&& YEAR ( Data[From Date] ) = YEAR ( EARLIER ( Data[From Date] ) )
&& Data[From Date] <= EARLIER ( Data[From Date] )
)
)
Hi,
Thank you for your reply.
I am not sure if I correctly understood your second questions, but please check the below picture and the attached pbix file whether it suits your requirement.
Expected CC =
VAR _toponebyyeartable =
TOPN (
1,
FILTER (
Data,
Data[UNID] = EARLIER ( Data[UNID] )
&& YEAR ( Data[From Date] ) = YEAR ( EARLIER ( Data[From Date] ) )
),
Data[In year count CC], DESC
)
RETURN
IF (
MAXX ( _toponebyyeartable, Data[In year count CC] ) = Data[In year count CC],
Data[In year count CC]
)
@Jihwan_Kim This is perfect thank you.
So the next step - Is there a way that just the most recent instance in each year is marked?
I.e for those that have just 1 instance in a year we get a 1, for those that have had 2 instances in a year the first instance in blank and the second is mark as 2 and so on?
When I count this the 1 is throwing the figures off a little as someone with 2 or more instances is also appearing in the column counting their first and second instance as well.
Hi,
Thank you for your reply.
I am not sure if I correctly understood your second questions, but please check the below picture and the attached pbix file whether it suits your requirement.
Expected CC =
VAR _toponebyyeartable =
TOPN (
1,
FILTER (
Data,
Data[UNID] = EARLIER ( Data[UNID] )
&& YEAR ( Data[From Date] ) = YEAR ( EARLIER ( Data[From Date] ) )
),
Data[In year count CC], DESC
)
RETURN
IF (
MAXX ( _toponebyyeartable, Data[In year count CC] ) = Data[In year count CC],
Data[In year count CC]
)
Hi,
Please check the below picture and the attached pbix file.
Total count CC =
COUNTROWS (
FILTER (
Data,
Data[UNID] = EARLIER ( Data[UNID] )
&& Data[From Date] <= EARLIER ( Data[From Date] )
)
)
In year count CC =
COUNTROWS (
FILTER (
Data,
Data[UNID] = EARLIER ( Data[UNID] )
&& YEAR ( Data[From Date] ) = YEAR ( EARLIER ( Data[From Date] ) )
&& Data[From Date] <= EARLIER ( Data[From Date] )
)
)
Check out the July 2025 Power BI update to learn about new features.
This is your chance to engage directly with the engineering team behind Fabric and Power BI. Share your experiences and shape the future.
User | Count |
---|---|
23 | |
10 | |
10 | |
9 | |
7 |