Question

I have a table:

+---------+--------------------+--------------------------+
| imd_id  | Total TRx per Plan |        plan name         |
+---------+--------------------+--------------------------+
| 1111005 | 397.1556           | Medicaid Illinois (Idpa) |
| 1111005 | 25.7691            | Self Pay                 |
| 1111005 | 24.4355            | Tricare North Region     |
| 1111005 | 15.0312            | 0                        |
| 1111005 | 8.8425             | 0                        |
| 1111005 | 8.3139             | 0                        |
| 1111005 | 7.0534             | 0                        |
| 1111005 | 6.2588             | 0                        |
| 1111005 | 6.0358             | Bravo Health             |
| 1111005 | 5.9872             | 0                        |
| 1111531 | 133.9664           | Medicaid Al              |
| 1111531 | 29.2318            | 0                        |
| 1111531 | 23.2499            | 0                        |
| 1111531 | 21.9774            | 0                        |
| 1111531 | 14.9269            | 0                        |
| 1111531 | 10.1903            | Self Pay                 |
| 1111531 | 5.4962             | 0                        |
| 1111531 | 5.3409             | Bcbs Federal             |
| 1111531 | 4.4801             | 0                        |
| 1111531 | 3.8003             | 0                        |
+---------+--------------------+--------------------------+

and trying to generate data that looks like this

+---------+--------------------------+----------+---------------+-----------+----------------------+----------+
| imd_id  |      TopFirstPlan       | TopFirst | TopSecondPlan | TopSecond |    TopThirdPlan     | TopThird |
+---------+--------------------------+----------+---------------+-----------+----------------------+----------+
| 1111005 | Medicaid Illinois (Idpa) | 0.78     | Self Pay      | 0.05      | Tricare North Region | 0.04     |
| 1111531 | MEDICAID ALABAMA (AL)    | 0.5      | Self Pay      | 0.04      | Bcbs Federal         | 0.02     |
+---------+--------------------------+----------+---------------+-----------+----------------------+----------+

please note that the way the TOPFIRST, TOP SECOND, TOP THIRD are created is the corresponding Total TRx per Plan divided by the sum of the plans for that specific IMD_ID.

so far I have this:

 select distinct a.imd_id,'topone'=
    (select top 1 totalrxperplan 
        from book1 b
      where b.imd_id =  a.imd_id)/
      (select SUM(totalrxperplan) 
        from book1 b
        where b.imd_id = a.imd_id)
      ,'topplan2'=
      (select top 1 xifinplanname 
        from book1 b
      where b.imd_id =  a.imd_id)
from book1 a
order by 1 asc

this query will return:

+---------+--------------------------+----------+
| imd_id  |      TopFirstPlan1       | TopFirst |
+---------+--------------------------+----------+
| 1111005 | Medicaid Illinois (Idpa) | 79%      |
| 1111531 | MEDICAID ALABAMA (AL)    | 53%      |
+---------+--------------------------+----------+

but I need to add on the other columns.

Please note that we will ignore the plan name where it is 0

Answer 1

CREATE TABLE #x(imd_id INT, totalrxperplan FLOAT, xifinplanname NVARCHAR(64));

INSERT #x VALUES
(1111005,397.1556 ,'Medicaid Illinois (Idpa)'),
(1111005,25.7691  ,'Self Pay                '),
(1111005,24.4355  ,'Tricare North Region    '),
(1111005,15.0312  ,'0                       '),
(1111005,8.8425   ,'0                       '),
(1111005,8.3139   ,'0                       '),
(1111005,7.0534   ,'0                       '),
(1111005,6.2588   ,'0                       '),
(1111005,6.0358   ,'Bravo Health            '),
(1111005,5.9872   ,'0                       '),
(1111531,133.9664 ,'Medicaid Al             '),
(1111531,29.2318  ,'0                       '),
(1111531,23.2499  ,'0                       '),
(1111531,21.9774  ,'0                       '),
(1111531,14.9269  ,'0                       '),
(1111531,10.1903  ,'Self Pay                '),
(1111531,5.4962   ,'0                       '),
(1111531,5.3409   ,'Bcbs Federal            '),
(1111531,4.4801   ,'0                       '),
(1111531,3.8003   ,'0                       ');

Now the query:

WITH cte1(id,pn,s) AS 
(
    SELECT imd_id, xifinplanname, 
      ROUND(totalrxperplan/SUM(totalrxperplan) OVER (PARTITION BY imd_id),2,1)
    FROM #x WHERE xifinplanname <> '0'
),
cte2(id,pn,s,rn) AS 
(
    SELECT id,pn,s,ROW_NUMBER() OVER (PARTITION BY id ORDER BY s DESC)
    FROM cte1
)
SELECT 
  id, 
  TopFirstPlan  = MAX(CASE WHEN rn = 1 THEN pn END),
  TopFirst      = MAX(CASE WHEN rn = 1 THEN s  END),
  TopSecondPlan = MAX(CASE WHEN rn = 2 THEN pn END),
  TopSecond     = MAX(CASE WHEN rn = 2 THEN s  END),
  TopThirdPlan  = MAX(CASE WHEN rn = 3 THEN pn END),
  TopThird      = MAX(CASE WHEN rn = 3 THEN s  END)
FROM cte2 
WHERE rn <= 3
GROUP BY id;

If my assumption is right that the output numbers don’t match yours because you want to include even ‘0’ plans in the total, just not in the results, then you can just shift the where clause:

WITH cte1(id,pn,s) AS 
(
    SELECT imd_id, xifinplanname, 
      ROUND(totalrxperplan/SUM(totalrxperplan) OVER (PARTITION BY imd_id), 2, 1)
    FROM #x -- < -- removed where clause from here
),
cte2(id,pn,s,rn) AS 
(
    SELECT id,pn,CONVERT(DECIMAL(3,2), s),ROW_NUMBER() OVER 
      (PARTITION BY id ORDER BY s DESC)
    FROM cte1 WHERE pn <> '0' -- <-- moved where clause here
)
SELECT 
  id, 
  TopFirstPlan  = MAX(CASE WHEN rn = 1 THEN pn END),
  TopFirst      = MAX(CASE WHEN rn = 1 THEN s  END),
  TopSecondPlan = MAX(CASE WHEN rn = 2 THEN pn END),
  TopSecond     = MAX(CASE WHEN rn = 2 THEN s  END),
  TopThirdPlan  = MAX(CASE WHEN rn = 3 THEN pn END),
  TopThird      = MAX(CASE WHEN rn = 3 THEN s  END)
FROM cte2 
WHERE rn <= 3
GROUP BY id;