# DAX custom score challenge

• ### Question

• Hi,

Here is the situation. I have two tables: "Messages" and "Users" which are related throught User_id.

Mesagges: Message_id, Replied_to_id, User_id

Users: User_id, User_name, Department

What i want to do is to create a measure that will calculate some custom Score

Score = If the user replied to a post made by a user from a different department, it counts as 2. If the user replied to a post made by a user from the same department, it counts as 1. If the post does not have Replied_to_id (Initial post), it counts as 0.

Does anyone have any suggestions how to do this?

Thanks!

Monday, February 13, 2017 9:09 AM

### Answers

• Assuming that you have a relationship between the 2 User_Id columns a measure like the following should work

Score :=
SUMX (
Messages,
IF (
ISBLANK ( messages[replied_to_id] ),
0,
IF (
LOOKUPVALUE ( Users[Department], Users[User_id], Messages[Replied_to_id] )
= RELATED ( Users[Department] ),
1,
2
)
)
)

http://darren.gosbell.com - please mark correct answers

Tuesday, February 14, 2017 4:02 AM

### All replies

• Hi IvanMislav,

Based on my understanding, I post the following solution. If this doesn’t resolve your issue, please create sample data, so I can further analysis.

In Message table, create a calculated column using the formula.

```S=IF(CALCULATE(COUNTA(Message[User_id]),ALLEXCEPT(Message[Replied_to_id]))=1,0,IF(DISTINCTCOUNT(Message[User_id])=1,1,2))
```

Then create a measure in Users table.

`Score:=CALCULATE(SUM(Mesagges[S]),ALLEXCEPT(Users, Users[User_id]))`
Thanks a lot.

Best Regards,
Angelia

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Tuesday, February 14, 2017 2:19 AM
• Assuming that you have a relationship between the 2 User_Id columns a measure like the following should work

Score :=
SUMX (
Messages,
IF (
ISBLANK ( messages[replied_to_id] ),
0,
IF (
LOOKUPVALUE ( Users[Department], Users[User_id], Messages[Replied_to_id] )
= RELATED ( Users[Department] ),
1,
2
)
)
)

http://darren.gosbell.com - please mark correct answers

Tuesday, February 14, 2017 4:02 AM