x

how to get the counter column based on another column?

I have a table with the info about buildings, a table about expenses, a table about users and a table that does the billing. In the billing table, I need to have a counter that counts different users inside a building. I tried to do this with the ROW_NUMBER() but I can't get the desired result.

This is my query so far:

  SELECT r.id, r.building_id AS zID,z.name AS zName,
     r.user_id AS kID, k.Name AS kName,
     expence_id AS uID,u.name AS uName,u.price AS uPrice,
     IIF(u.unique=1,u.price,k.kvadratura * u.price) AS Balance,
     r.year,r.month,
     ROW_NUMBER() OVER(Partition by r.user_id ORDER BY r.id) AS Counter
     FROM Bill r 
     INNER JOIN Expences u ON r.usluga_id = u.id
     INNER JOIN Building z ON r.zgrada_id = z.id
     INNER JOIN User k ON r.korisnik_id = k.id
     WHERE r.building_id =7

This is my output: alt text

What I would want to get is this:

For every user inside a building, counter+1.

alt text

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asked Feb 06 at 10:46 PM in Default

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tricman10
61 4

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1 answer: sort voted first

Seems like you would have to use DENSE_RANK instead of ROW_NUMBER(). In the following code I have added the counter per building as well as counter per user, use whatever suits you

 declare @table table
 (
     id int,
     UserId int,
     BuildingId int
 )
 insert @table
 select 24, 10, 7 union all
 select 25, 10, 7 union all
 select 26, 11, 7 union all
 select 27, 11, 7 union all
 select 24, 10, 8 union all
 select 25, 10, 8 union all
 select 26, 12, 8 union all
 select 27, 12, 8
 
 select *
 ,dense_rank() over(partition by BuildingId order by UserId) PerBuildingCounter
 ,dense_rank() over(order by UserId) PerUserCounter
 from @table

Hope it helps. Cheers.

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answered Feb 08 at 11:52 AM

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Usman Butt
14.3k 6 13 21

That is what I needed, thank you!

Feb 08 at 10:11 PM tricman10
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asked: Feb 06 at 10:46 PM

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Last Updated: Feb 08 at 10:11 PM

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