DAX Query With Optional Parameters

[littlemojopuppy]

Hi!  Would like to ask for some help with something.  Got a Power BI paginated report based on this DAX Query.

EVALUATE
    (
        FILTER (
            ADDCOLUMNS (
                CALCULATETABLE (
                    Placements,
                    NOT ( Departments[Department] IN { "BEA", "CORP", "IR" } ),
                    NOT ( Clients[clientCorporationID] IN { 169298, 234729 } ),
                    NOT ( Placements[terminationReason] IN { "DNS", "Did Not Start" } ),
                    VALUES ( Placements[terminationReason] ),
                    Placements[isDeleted] = FALSE (),
                    USERELATIONSHIP ( 'Calendar'[FullDate], Placements[dateAdded] )
                ),
                "Vertical", RELATED ( Verticals[Vertical] ),
                "Branch", RELATED ( Branches[Branch] ),
                "MidAtlantic", RELATED ( MidAtlantic[midatlantic] ),
                "ClientName", RELATED ( Clients[name] ),
                "JobTitle", RELATED ( JobOrders[title] ),
                "JobOwner", RELATED ( Users[name] )
            ),
            RELATED ( Verticals[Vertical] ) = @Vertical
			&& RELATED ( Branches[Branch] ) = @Branch
			&& RELATED ( MidAtlantic[midatlantic] ) = @MidAtlantic
			&& RELATED ( EmploymentTypes[employmentType] ) = @EmploymentTypes
			&& RELATED ( 'Calendar'[FullDate] ) >= @StartDate
            && RELATED ( 'Calendar'[FullDate] ) <= @EndDate
        )   
    )

Only StartDate and EndDate parameters are required.  The other four parameters are optional, and could have one or more values if provided.  I've spent the last few hours googling looking for anything.  Closest thing that seemed promising was this article, but unfortunately didn't help.

Could anyone provide some help or at least point me in the right direction?  Thank you!  🙂

[littlemojopuppy · Accepted solution]

After four days of trying, best solution possible: blow the whole thing away and start over

[lbendlin]

Use COALESCE to decide what to provide in case the parameter is empty.

[littlemojopuppy]

Hi @lbendlin ... a null/blank value would be legitimate (user may not want to filter on something).

For context, this is for a paginated report in a Power BI report.  User will have a visual and this would be so they could see the detail behind a particular data point in that visual.  Passing parameters into a paginated report has been the biggest pain in the a$$ I've encountered in months...

In this article it says "use the query designer for the data source to help build a parameterized query".  So I used the query designer and now I have this...

DEFINE 
VAR vFromCalendarFullDate1 =
IF (
    PATHLENGTH ( @FromCalendarFullDate ) = 1,
    IF (
        @FromCalendarFullDate <> "",
        @FromCalendarFullDate,
        BLANK ()
    ),
    IF (
        PATHITEM (
            @FromCalendarFullDate,
            2
        ) <> "",
        PATHITEM (
            @FromCalendarFullDate,
            2
        ),
        BLANK ()
    )
)
VAR vFromCalendarFullDate1ALL =
PATHLENGTH ( @FromCalendarFullDate ) > 1
    && PATHITEM (
        @FromCalendarFullDate,
        1,
        1
    ) < 1
VAR vToCalendarFullDate1 =
IF (
    PATHLENGTH ( @ToCalendarFullDate ) = 1,
    IF (
        @ToCalendarFullDate <> "",
        @ToCalendarFullDate,
        BLANK ()
    ),
    IF (
        PATHITEM (
            @ToCalendarFullDate,
            2
        ) <> "",
        PATHITEM (
            @ToCalendarFullDate,
            2
        ),
        BLANK ()
    )
)
VAR vToCalendarFullDate1ALL =
PATHLENGTH ( @ToCalendarFullDate ) > 1
    && PATHITEM (
        @ToCalendarFullDate,
        1,
        1
    ) < 1
EVALUATE 
	SUMMARIZECOLUMNS(
		'Placements'[placementID], 
		'Verticals'[Vertical], 
		'Branches'[Branch], 
		'EmploymentTypes'[employmentType], 
		'Placements'[status], 
		'Placements'[dateAdded], 
		'Placements'[dateBegin], 
		'Placements'[dateEnd], 
		'Clients'[name], 
		'JobOrders'[title], 
		'Users'[name], 
		FILTER(
			VALUES('Calendar'[FullDate]), 
			(vFromCalendarFullDate1ALL || 'Calendar'[FullDate] >= DATEVALUE(vFromCalendarFullDate1) + TIMEVALUE(vFromCalendarFullDate1)) && 
			(vToCalendarFullDate1ALL || 'Calendar'[FullDate] <= DATEVALUE(vToCalendarFullDate1) + TIMEVALUE(vToCalendarFullDate1))
		), 
		RSCustomDaxFilter(@VerticalsVertical,EqualToCondition,[Verticals].[Vertical],String), 
		RSCustomDaxFilter(@BranchesBranch,EqualToCondition,[Branches].[Branch],String), 
		RSCustomDaxFilter(@MidAtlanticmidatlantic,EqualToCondition,[MidAtlantic].[midatlantic],String), 
		RSCustomDaxFilter(@EmploymentTypesemploymentType,EqualToCondition,[EmploymentTypes].[employmentType],String), 
		FILTER(
			VALUES('Departments'[Department]), 
			('Departments'[Department] <> "BEA") && ('Departments'[Department] <> "Corp") && ('Departments'[Department] <> "IR")
		), 
		FILTER(
			VALUES('Clients'[clientCorporationID]), 
			('Clients'[clientCorporationID] <> 169298) && ('Clients'[clientCorporationID] <> 234729)
		), 
		FILTER(
			VALUES('Placements'[terminationReason]), 
			('Placements'[terminationReason] <> "Did Not Start") && ('Placements'[terminationReason] <> "DNS")
		), 
		FILTER(
			VALUES('Placements'[isDeleted]), 
			('Placements'[isDeleted] = False)
		)
	)

But when I try to publish the paginated report to the Power BI service, error.