Add Count Column

[Anonymous]

I need to create a new column where I can get the Count of reservationId per clientId.
I have reservationId and clientId, reservationId is distinct.

I create a table to get count of reservationId per ClientId below:

Similarly I need that count in column.

[amitchandak]

@Anonymous , a new column

countx(filter(Table, [clientid] =earlier([clientid]) ,[reservationid])

[Anonymous]

Its giving Unexpected Parameter.

Furthermore, I am trying to get the column via Power Query Editor. @amitchandak 

[v-jingzhang · Accepted solution]

Hi @Anonymous 

It should be 

T.Count = COUNTX (FILTER ( 'public Reservations', [clientId] = EARLIER ( [clientId] ) ),[reservationId])

Take care of pairs of parentheses. One ")" in your DAX formula just isn't at the correct position.  

Best Regards,
Community Support Team _ Jing

[amitchandak]

@Anonymous , this was dax, one correct

countx(filter(Table, [clientid] =earlier([clientid])) ,[reservationid])

for power query create a new table that group by client id and merge that with this table 

[Anonymous]

@amitchandak I was able to use the group by and accomplish what I needed to do.

While for the DAX you provided, it is still showing Unexpected Parameter so that isn't working over here.