DATEDIFF for repeated rows

[Anonymous]

Hey everybody! I have an issue and would be appreciated for your help.

I have a table below that contains information about power station's working time. Column 1 shows us when station works properly (0) and when it shuts down (1):

Date	Column 1
1.10.22 0:01	0
1.10.22 0:02	0
1.10.22 0:03	0
1.10.22 0:04	1
1.10.22 0:05	1
1.10.22 0:06	1
1.10.22 0:07	0
1.10.22 0:08	0
1.10.22 0:09	1
1.10.22 0:10	1
1.10.22 0:11	0
1.10.22 0:12	0
1.10.22 0:13	0
1.10.22 0:14	0

I need to create report  that shows me how long station hasn't worked and when it happend, something like this:

Start time	End time	Duration
1.10.22 0:04	1.10.22 0:06	3 min
1.10.22 0:09	1.10.22 0:10	2 min

I tried with DATEDIFF but nothing. Thank you in advance

[Anonymous]

@tamerj1 Thank you for good example, maybe I do something wrong but this is what I got.

In calculated column everything looks fine in a first glance

But when it comes to visual, it doesn't work properly

[tamerj1]

Hi @Anonymous 
My Mistake, I put "DAY" instead of "MINUTE". I have updated the solution in my original reply. Also to see the duration of each down period you need to add the [Down Order] column in the table visual

[Anonymous]

@tamerj1 Still nothing=(

Could you please take a glance on .pbix, maybe I missed something

https://drive.google.com/file/d/1o6Nym95tV-ZGRDTBSbSxyJPV-2I0CQxh/view?usp=sharing 

[tamerj1 · Accepted solution]

Hi @Anonymous 
It was a wrong solution.

Please refer to attached file with the correct solution

Down Order = --column 
IF ( 
    'Nizhny Tagil#1'[HP GOX] = 1,
    RANKX ( 
        FILTER ( 'Nizhny Tagil#1', 'Nizhny Tagil#1'[HP GOX] = 1 ),
        VAR T1 = FILTER ( 'Nizhny Tagil#1', 'Nizhny Tagil#1'[Date] <= EARLIER ( 'Nizhny Tagil#1'[Date] ) )
        RETURN
            COUNTROWS (T1)
            - SUMX (
                T1,
                'Nizhny Tagil#1'[HP GOX]
            ),, 
            ASC, 
            Dense
    )
)

Start Time = --measure
IF ( 
    NOT ISBLANK ( SELECTEDVALUE ( 'Nizhny Tagil#1'[Down Order] ) ),
    MIN ( 'Nizhny Tagil#1'[Date] )
)

End Time = --measure
IF ( 
    NOT ISBLANK ( SELECTEDVALUE ( 'Nizhny Tagil#1'[Down Order] ) ),
    MAX ( 'Nizhny Tagil#1'[Date] )
)

Downtime = --measure
SUMX (
    VALUES ( 'Nizhny Tagil#1'[Down Order] ),
    IF (
        'Nizhny Tagil#1'[Down Order] <> BLANK (),
        DATEDIFF ( [Start Time], [End Time], MINUTE )
    )
)

[tamerj1]

Hi @Anonymous 

you need to create a calculated column that sort the down occurances in order. Then you can place this column in the table visual followed by the following measures.

Down Order = --column 
IF (
    'Table'[Column1] = 1,
    SUMX (
        FILTER ( 'Table', 'Table'[Date] <= EARLIER ( 'Table'[Date] ) ),
        'Table'[Column1]
    )
)

Start Time = --measure 
MIN ( 'Table'[Date] )

End Time = --measure 
MAX ( 'Table'[Date] )

Downtime = --measure 
SUMX (
    VALUES ( 'Table'[Down Order] ),
    IF (
        'Table'[Down Order] <> BLANK (),
        DATEDIFF ( [Satrt Time], [End Time], MINUTE)
    )
)