Datediff function seconds and minutes

[Anonymous]

Hi, 

When I calculate a datediff in hours I haven't any problem:

*Countdown (hours) = IF(ISBLANK(RELATED(mysql_mail_log[created])),DATEDIFF(mysql_reports[*NU],mysql_reports[first_report_expected],HOUR))

When I try to calculate the datediff in minutes or seconds, I receive the mesage 'Can't display the visual -> OLE DB or EDBC error: [Expression.Error] We couldn't fold the expression to the data source. 

*Countdown (minutes) = IF(ISBLANK(RELATED(mysql_mail_log[created])),DATEDIFF(mysql_reports[*NU],mysql_reports[first_report_expected],MINUTE))

 Anyone knows what is wrong?

I'm using SQL direct query data. 

[tamerj1]

@Anonymous 

Strange that the HOUR works! Creating time related calculated columns is not allowed in direct query. You have to create measures only

[Anonymous]

how I calculate 'hh:mm' or decimal hours with only measurement and without column? I want a value for every row without a calculation like sum, average, ...

[tamerj1]

Hi @Anonymous 
This might require further formatting

Countdown (minutes) =
VAR TimeDifference =
    SUMX (
        mysql_reports,
        IF (
            ISBLANK ( RELATED ( mysql_mail_log[created] ) ),
            DATEDIFF ( mysql_reports[*NU], mysql_reports[first_report_expected], MINUTE )
        )
    )
RETURN
    QUOTIENT ( TimeDifference, 60 ) & ":"
        & MOD ( TimeDifference, 60 )

Would be great if you can provide sample file

[Anonymous]

I don't succeed 😞

Is it possible to mail you the file? 

I hope you can give me the solution. 

[tamerj1]

@Anonymous 
I sent my email in a private message

[tamerj1]

@Anonymous 
Even more simple is just to substract and select "Short Time" data type manually.

Countdown (minutes) =
SUMX (
    mysql_reports,
    IF (
        ISBLANK ( RELATED ( mysql_mail_log[created] ) ),
        mysql_reports[first_report_expected] - mysql_reports[*NU]
    )
)