Row calculation

[edgarjb-68]

How to calculate rows on a table in Power BI? I want to create a column "started" as below, for each row of this column I need the result like this excel formula: =IF(AND(A3=A2;B3-B2<1);"No";"yes")

part	install date	started
PAU-0101	26/03/2019 05:17	yes
PAU-0101	07/04/2019 18:56	No
PAU-0101	07/04/2019 19:56	yes
PAU-0102	26/03/2019 05:17	yes
PAU-0102	07/04/2019 18:56	No
PAU-0102	07/04/2019 19:56	yes

[Anonymous · Accepted solution]

Hi ,
Can you try to change the datediff to minutes and change the less than condition.
Thanks.

[Anonymous]

Hi,

Can you try to use this:

started = 
VAR v_LagPart = CALCULATE( MAX( Data[part] ),
          FILTER( Data, Data[part] = EARLIER( Data[part] ) &&
          Data[installdate] < EARLIER( Data[installdate] )
          )
) 

VAR v_LagDate = CALCULATE( MAX( Data[installdate] ),
          FILTER( Data, Data[part] = EARLIER( Data[part] ) &&
          Data[installdate] < EARLIER( Data[installdate] )
          )
)
RETURN IF( Data[part] = v_LagPart && ( DATEDIFF( Data[installdate],v_LagDate, DAY ) < 1 && DATEDIFF( Data[installdate],v_LagDate, DAY ) <> 0 ), "No", "Yes" )

Thanks.

[edgarjb-68]

Thank you, elegant coding.

I tried your suggestion but it does not look right, see my results table:

[Anonymous]

Hi,
Could you please explain the if condition. I mean what are you trying to achieve using it, specifically the date comparison part.
Thanks.

[edgarjb-68]

Hi, thanks a lot for the help so far!! 

First the table columns must be sorted, Column "Part" ascending and column "Installdate-time" also  ascending.

the column "started" intents to return a "no" if:

        the "Part" in row 2 is equal to the "Part" in row 1, and

        if the "Installdate-time" of row 2 minus "Installdate-time" of row 1 is less than 1 day.

       But, if the difference between the row 2 and row 1 "Installdate-time" is more than 1 day, it must return a "yes".

So for the same "Part", if it runs less than one day it did not started, but if it runs more than one day it is considered as successfully started.

[Anonymous]

Hi @edgarjb-68 ,

Can you try using this:

started = 
VAR v_LagPart = CALCULATE( MAX( Data[part] ),
          FILTER( Data, Data[part] = EARLIER( Data[part] ) &&
          Data[installdate] < EARLIER( Data[installdate] )
          )
) 

VAR v_LagDate = CALCULATE( MAX( Data[installdate] ),
          FILTER( Data, Data[part] = EARLIER( Data[part] ) &&
          Data[installdate] < EARLIER( Data[installdate] )
          )
)
RETURN IF( Data[part] = v_LagPart && ( DATEDIFF( v_LagDate, Data[installdate], DAY ) < 1 ), "No", "Yes" )

Thanks.

[edgarjb-68]

Hi!! Thanks a lot!! Almost there!!!

See that there are a few rows (highlighted) where the response should be "No", because the difference between rows 2 and 1 is less than 1 day (24 hours) for the "Installdate".

[Anonymous]

Hi @edgarjb-68 ,

This should work:

started = 
VAR v_LagPart = CALCULATE( MAX( Data[part] ),
          FILTER( Data, Data[part] = EARLIER( Data[part] ) &&
          Data[installdate] < EARLIER( Data[installdate] )
          )
) 

VAR v_LagDate = CALCULATE( MAX( Data[installdate] ),
          FILTER( Data, Data[part] = EARLIER( Data[part] ) &&
          Data[installdate] < EARLIER( Data[installdate] )
          )
)
RETURN IF( Data[part] = v_LagPart && ( DATEDIFF( v_LagDate, Data[installdate], HOUR ) < 24 ), "No", "Yes" )

Thanks.

Please accept this as a solution if it satisfies the requirement. Appreciate your Kudos. 🙂

[edgarjb-68]

Wow, it is very, very close to it!!!

Though I still find only 5 instances where the response should be "No", see two examples highlighted.

One thing I noticed is that on those cases the "installdate" difference is very close to 24 hours, somthing like 23.5 or higher.

[Anonymous · Accepted solution]

Hi ,
Can you try to change the datediff to minutes and change the less than condition.
Thanks.

[edgarjb-68 · Accepted solution]

JUST PERFECT!!!

started = VAR v_LagPart = CALCULATE( MAX( Data[part] ), FILTER( Data, Data[part] = EARLIER( Data[part] ) && Data[installdate] < EARLIER( Data[installdate] ) ) ) VAR v_LagDate = CALCULATE( MAX( Data[installdate] ), FILTER( Data, Data[part] = EARLIER( Data[part] ) && Data[installdate] < EARLIER( Data[installdate] ) ) ) RETURN IF( Data[part] = v_LagPart && ( DATEDIFF( v_LagDate, Data[installdate], MINUTE ) < 1440 ), "No", "Yes" )