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rax99 Member
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DAX or M Query to subtract dates on different rows

Ok so bare with me this is going to get a little confusing;

 

I want to get the values in the desired column like the table below:

 

TqdQx.png

 

 

 

 

 

 

 

 

The calculation is: [StartTime] minus the previous row [Endtime]. So row 2 [Starttime] minus row 1 [Endtime] would be 17:04:48 minus 17:04:31 (=17sec). However I want to exclude rows where CustAgentFl = 0 AND Transferflag = 0 before doing the date subtract calculation. Also, if Starttime- Endtime is <0 then just 0.

The rows are all grouped by the same NID, so of course the DAX or M query will need to group by the NID.

Any help would be great.Thanks

1 ACCEPTED SOLUTION

Accepted Solutions
Community Support Team
Community Support Team

Re: DAX or M Query to subtract dates on different rows

Hi @rax99,

 

For your requirement, you could create a calculated column with the formula below. Please note, you need to create the index column in Query Editor firstly.

 

Column = 
VAR a =
    CALCULATE (
        MAX ( 'Table1'[EndTime] ),
        FILTER ( ALLEXCEPT('Table1',Table1[NID]), 'Table1'[Index] <= EARLIER ( 'Table1'[Index] ) - 1 )
    )
RETURN
    IF (
        'Table1'[CustAgentFI] = 0
            && 'Table1'[TransferFIag] = 0,
        TIME ( HOUR ( 0 ), MINUTE ( 0 ), SECOND ( 0 ) ),
        IF (
            ISBLANK ( a ),
            TIME ( HOUR ( 0 ), MINUTE ( 0 ), SECOND ( 0 ) ),
            IF (
                'Table1'[StartTime] - a
                    < 0,
                TIME ( HOUR ( 0 ), MINUTE ( 0 ), SECOND ( 0 ) ),
                'Table1'[StartTime] - a
            )
        )
    )

Here is my test result.

 

Untitled.png

 

More details, you could refer to the attachment.

 

Best  Regards,

Cherry

Community Support Team _ Cherry Gao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
1 REPLY 1
Community Support Team
Community Support Team

Re: DAX or M Query to subtract dates on different rows

Hi @rax99,

 

For your requirement, you could create a calculated column with the formula below. Please note, you need to create the index column in Query Editor firstly.

 

Column = 
VAR a =
    CALCULATE (
        MAX ( 'Table1'[EndTime] ),
        FILTER ( ALLEXCEPT('Table1',Table1[NID]), 'Table1'[Index] <= EARLIER ( 'Table1'[Index] ) - 1 )
    )
RETURN
    IF (
        'Table1'[CustAgentFI] = 0
            && 'Table1'[TransferFIag] = 0,
        TIME ( HOUR ( 0 ), MINUTE ( 0 ), SECOND ( 0 ) ),
        IF (
            ISBLANK ( a ),
            TIME ( HOUR ( 0 ), MINUTE ( 0 ), SECOND ( 0 ) ),
            IF (
                'Table1'[StartTime] - a
                    < 0,
                TIME ( HOUR ( 0 ), MINUTE ( 0 ), SECOND ( 0 ) ),
                'Table1'[StartTime] - a
            )
        )
    )

Here is my test result.

 

Untitled.png

 

More details, you could refer to the attachment.

 

Best  Regards,

Cherry

Community Support Team _ Cherry Gao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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