Set analysis expression

[HH3571]

Hello i have the following problem:

I have a column/dimension with user names and a date.

|User_Login|        |Date|

User1                      2022-xx-xx

User2                     null

User1                     2022-xx-xx

User3                     2022-xx-xx

I have some Users that doesn't have a date, and i want to ignore those in my count of users.

I would like to show the count of user names from this table, in regards to if it has a date.

So if i would express it logically it would be something like:

Count user_login if Date exist, give a value, if date null=skip.

So far:

i have something like "Count({USER_LOGIN ={${<USER_LOGIN ={"=Sum(DATE)>0"}>}USER_LOGIN ))}>" and it doesn't work.

Br

[Or · Accepted solution]

Why not just Count(Date)?