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Editorial Team
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Asked: 2026-05-27T07:48:36+00:00

I’d like to make a linear score formula that I can use in a

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I’d like to make a linear score formula that I can use in a view. I’m having trouble working out the logic though.

Data:

*UserID (int)| *WidgetID (int)| Rank (int) | IsPreferred (bit)
1            | 1              | 1          | 1
1            | 2              | 2          | 1
1            | 3              | 3          | 1
1            | 4              | 1          | 0
1            | 5              | 2          | 0
2            | 1              | 1          | 1

User #1 loves Widget #1 the most and hates Widget #4 the most. User #2 just loves Widget #1 (the most).

I would like the my view to look something like this:

*UserID (int)| *WidgetID (int)| Rank (int) | IsPreferred (bit) | Score (int)
1            | 1              | 1          | 1                 | 3
1            | 2              | 2          | 1                 | 2
1            | 3              | 3          | 1                 | 1
1            | 4              | 1          | 0                 | -2
1            | 5              | 2          | 0                 | -1
2            | 1              | 1          | 1                 | 1

The Rank always (for now) has an absolute between 1-5 (inclusive). UserID and WidgetID are both primary keys and the application forces consecutive unique ranks so I don’t have to worry about conflicting scores. I thought of doing something like this:

Select *, Case When IsPreferred = 1 Then (5 / Rank) Else -(5 / Rank) End As Score...

But that’s exponential and could cause problems if we allow for more then 5 rankings in the future…

I’m hoping I don’t have to do this in my application, cause that’s not very l33t. I’m thinking PARTITION or RANK may be able to help me out but I haven’t had any success yet.

Anybody got any ideas? Thanks

UPDATE see my answer below

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1 Answer

  1. Editorial Team

    This works, but I’m open to other ideas:

    SELECT    UserID, WidgetID, Rank, IsPreferred, Rank() over (Partition BY UserID  order by Rank DESC) as Score
FROM         dbo.Table
Where IsPreferred = 1
Union
SELECT    UserID, WidgetID, Rank, IsPreferred, -1 * Rank() over (Partition BY UserID  order by Rank DESC) as Score
FROM         dbo.Table
Where IsPreferred = 0
ORDER BY UserID, Score
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