Issue with counting rows based on a value in another table

[msimmonsmcse]

I am trying to figure out a measure that will count the number of tickets assigned to a technician. The tricky part is that data coming from my system allows multiple resources to be assigned to a ticket and stores them in its database as a string value with each MemberId seperated by a comma (see sample data below). I want to know exactly how many tickets are assigned to each member based on the Resource_list value containing a match with the MemberID in the Member table. To make matters trickier, the two tables have an inactive relationship between the Ticket_OwnerID field and the MemberID field.

Tickets Table

TicketID	Resource_list	Ticket_OwnerID
1	JoeS	JoeS
2	JoeS,JaneD	JoeS
3	JoeS,MaxF	MaxF
4	MaxF	JaneD
5	JaneD,MaxF	JoeS
6	JoeS,JaneD,MaxF	MaxF

Member Table

MemberID	MemberName
JoeS	Joe Salami
JaneD	Jane Donut
MaxF	Max Freeze

Expected Result of Count of Tickets Assigned measure:

Joe	4
Jane	3
Max	4

[v-yohua-msft · Accepted solution]

Hi, @msimmonsmcse 

You can create a new measure and try the following DAX:

MEASURE = 
VAR _currentID =
    SELECTEDVALUE ( 'Member Table'[MemberID] )
VAR _Vtable =
    FILTER (
        CROSSJOIN (
            SELECTCOLUMNS ( 'Member Table', "_MID", 'Member Table'[MemberID] ),
            SELECTCOLUMNS ( 'Tickets Table', "_R_L", 'Tickets Table'[Resource_list] )
        ),
        FIND ( [_MID], [_R_L],, BLANK () ) <> BLANK ()
    )
RETURN
    COUNTX ( FILTER ( _Vtable, _currentID = [_MID] ), [_MID] )

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Best Regards

Yongkang Hua

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