Date difference based on condition

[tejapowerbi123]

Hello Community,

Can you please provide your suggestion?

I have two tables and they both have one to one relationship.My requirements is that I want to match ID on both table and if ID will match then I want to AVERAGE DAY DIFFERENCE.

I have tried below formula but I am not getting any result.

Calculated Column=

If (table a[id]=table b[id],average(datediff(table a[date],table b[date],day))

Here is my dataset.

Thanks

Table-A
ID	Date
A	15/06/2020
B	29/04/2020

Table-B
ID	Date
A	15/06/2020
C	21/04/2020
D	27/02/2020

[parry2k]

@tejapowerbi123 not very clear what would be the output, if there are dates in two tables and it is one row and what would be the average, isn't it is just a datediff? why you are using average?

[tejapowerbi123]

Hi Parry,

Thank you so much for your suggestion.

Please ignore AVERAGE,I am looking for day difference and it is not working.

Do you have any suggestion for me?

Thanks

[parry2k]

@tejapowerbi123 try this, assuming you are adding a new column in Table A, if you are adding a new column in Table B then use RELATED function with Table A

Date Difference = If (table a[id]=RELATED(table b[id]),datediff(table a[date],RELATED(table b[date]),day))

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[tejapowerbi123]

Hi Parry,

Formula is working fine but still i am not getting any result.

What i found in TABLE B date column has multiple blank (Date is not available).

Do you think because of that i am not getting right result.

Thanks

[parry2k]

@tejapowerbi123 of course if it is a blank date, you will not get the result. I cannot speak about your data, you have to test the logic where a date is available, not sure what else to say.

I would ❤ Kudos if my solution helped. 👉 If you can spend time posting the question, you can also make efforts to give Kudos whoever helped to solve your problem. It is a token of appreciation!

⚡Visit us at https://perytus.com, your one-stop shop for Power BI related projects/training/consultancy.⚡

[tejapowerbi123]

Thank you so much Parry.I can not change date column.Do you think do i have any other option.

[parry2k]

@tejapowerbi123 not sure what you mean? You have to tell what would be the business logic if there is no date.

[tejapowerbi123]

if id column match on table a and table then i want table a [date]-table b [date].That is the logic.

[dax · Accepted solution]

Hi @tejapowerbi123 , 

You could try below measure and refer to my sample for details

Measure 2 = IF(MIN(TA[ID])=MIN(TB[ID]), DATEDIFF(MIN(TA[DATE]), MIN(TB[DATE]), DAY), BLANK())

Best Regards,
Zoe Zhi

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.