count doing an Inner join

[Anonymous]

Hello,

Basically what I want to get the below output

select count(distinct c.email) from dbo.transactions t
inner join dbo.Contributors c
ON (t.ContributorId=c.Id)

Table Transactions is kind of:

TId        ContributorId                  Amount

1          1                                           5

2          2                                          6

3          3                                          4

Table Contributors

ContributorId       Email                  

1                            pepe@hotmail.com            

2                            rosa@hotmail.com              

3                            pepe@hotmail.com            

AS the result, I need all the different emails that are in Transaction table. In this case I will have 2 emails (differents) in transaction table.

[Cmcmahan]

This looks like you can just set up a relationship between your tables and then use this measure to get the count of distinct email addresses:

CountDistinctEmail = DISTINCTCOUNT('Contributors'[Email])

If you're trying to get a column of all the different values in the 'Contributors'[Email] column for future use you can use:

DistinctEmailValues = VALUES('Contributors'[Email])

[HotChilli]

Adding a relationship and using DISTINCTCOUNT would be the same as just using DISTINCTCOUNT so I don't think that's what the question is looking for.

For the inner join part to be taken into consideration i can think of a couple of ways (both require the relationship on contributorid) :

a calculated table

Table = SUMMARIZE (
txn,
"Dist Emails", DISTINCTCOUNT( Contributors[email] )
)

OR

a measure

distinct mails with txn = CALCULATE(DISTINCTCOUNT(Contributors[email]), FILTER(txn,txn[tid] > 0))