Date from another table btwn 2 dates on a row on a second table

[Allisond]

Good Morning,

I am struggling with a problem regarding admission events occurring between weight measurements in a row making that row invalid.  I want a way to identify those rows or remove those rows. 

I have 2 Tables

Table 1

PatientID	EventDate
1234	01/01/01
2345	01/03/04
1234	05/02/01
7890	02/15/02

 and

Table 2

PatientID	MeasurementDate	PriorMeasurementDate
1234	12/12/01	09/12/01
1234	07/01/01	11/01/00
7890	08/01/01	09/01/01

I am needing either a column to identify each row that does/does not   have any "event date" in between the measurementdate and priormeasurementdate     or      I need a table returned with only those rows that DO NOT have an event occuring between the MeasurementDate and PriorMeasurementDate.    

So for the above, Row 1 for 1234 would be kept, but Row 2 for 1234 would not.   The patient would have been readmitted in between those dates making that row invalid.

I have tried a calculated column:

CALCULATE

(VALUES('Events Data'[Event Date]),

FILTER   ('Events Data',          'Weights'[PatientID] = 'Events Data'[patid]

                                               && 'Census Events Data'[Event Date] >= Weights_20190901[Previous.Measurement Date]

                                               && 'Census Events Data'[Event Date] <= Weights_20190901[Measurement Date])

)

but getting an error "A table of multiple values was supplied where a single value was expected" which I totally get, but have no idea how correct for.    Any help would be Greatly Appreciated.

[amitchandak · Accepted solution]

@Allisond , you can measure like

CALCULATE
(max('Events Data'[Event Date]),
FILTER ('Events Data', max('Weights'[PatientID]) = 'Events Data'[patid]
&& 'Events Data'[Event Date] >= max('Weights'[Previous.Measurement Date])
&& 'Events Data'[Event Date] <= max('Weights'[Measurement Date]))
)

Can you share output in table format?

[Allisond]

Thank you!!! It seems to work beautifully.

Just to make sure, using this formula, If I have multiple event dates and multiple wt measure windows will using "MAX" only pull the most recent event or the MAX event date occurring within the dates window?   With my understanding of MAX - which may be off for sure......  MAX would only pull the most recent date?

Event:    1/4/20                      1/20/20

Wt:         1/6/20                     1/18/20

Prior Wt: 1/1/20                     1/22/20

Both rows would need to pull the respective event dates that fall within the window of wt to prior wt.