Forum Discussion
Find time between entries in same column
Hi,
I have a table which has 2 columns. One column (number) represents units with serial numbers that are unique. The other column (date - day) is which date the serial numbers are entered.
Each entry has one row. So a serial number will show up in multiple rows, depending on how often it is entered.
I want to find out how many days between each time a serial number is entered, in days. Then find the average for how often they are entered again. There is no limit for how many times a serial number can show up in the list.
I have tried grouping and other weird stuff, but my understanding of DAX is pretty weak. Could someone please help me out here?
Hi Davidolis , amitchandak ,
The last column is the average overall.AverageX = AVERAGEX(serialN,IF(serialN[Datediff]=BLANK() && serialN[Average time]>0,serialN[Average time]))which will also work as a measure.
Let me know if you have any questions.
If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
Nathaniel
8 Replies
Hi Davidolis , amitchandak ,
This will get you part way.Datediff = VAR _curdate = 'serialN'[Column2] VAR _prevDate = CALCULATE ( MAX ( serialN[Column2] ), ALLEXCEPT ( serialN, serialN[Column1] ), ( serialN[Column2] ) < _curdate ) VAR _calc = CALCULATE ( DATEDIFF ( _prevDate, _curdate, DAY ), ALLEXCEPT ( 'serialN', 'serialN'[Column1] ) ) RETURN _calcGet the current date, get the previous date, use DateDiff to calculate the time between.
Let me know if you have any questions.
If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
NathanielHi Davidolis , amitchandak ,
And the second columnAverage time = VAR _sum = CALCULATE ( SUM ( serialN[Datediff] ), ALLEXCEPT ( serialN, serialN[Column1] ) ) VAR _count = CALCULATE ( COUNT ( serialN[Column1] ), ALLEXCEPT ( serialN, serialN[Column1] ) ) - 1 RETURN DIVIDE ( _sum, _count )Get the sum, get the count - 1, Divide for average.
Let me know if you have any questions.
If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
Nathaniel
Try EARLIER
https://community.powerbi.com/t5/Desktop/Explanation-of-the-EARLIER-formula/td-p/529469
https://docs.microsoft.com/en-us/dax/earlier-function-dax
The information you have provided is not making the problem clear to me. Can you please explain with an example. If possible please share a sample pbix file after removing sensitive information.
ThanksHi, sorry if it wasn't clear i will make an example
123456789 1.1.2018 987654321 2.5.2019 124578945 5.5.2018 123456789 4.5.2019 554123479 6.6.2019 987654321 10.11.2019 123456789 9.11.2019 An entry can show up multiple times and I need to know how long on average between each entry and then average for all. Is this helpful? I haven't attempted the proposed solutions yet, just thought i would do my part first.
Hi Davidolis , amitchandak ,
The last column is the average overall.AverageX = AVERAGEX(serialN,IF(serialN[Datediff]=BLANK() && serialN[Average time]>0,serialN[Average time]))which will also work as a measure.
Let me know if you have any questions.
If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
Nathaniel
