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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.
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])
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))
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