Question

i have a table:

CREATE TABLE [dbo].[TargettingReport](
    [MLISNPI] [varchar](50) NULL,
    [CLIENT_ID1] [varchar](50) NULL,
    [Sum of count] [int] NULL
) ON [PRIMARY]

i am trying to select the 2nd and third highest SUM OF COUNT based on MLISNPI, CLIENT_ID1

this is how i get the max for every unique occurrence of MLISNPI, CLIENT_ID1:

  select [MLISNPI],[CLIENT_ID1],MAX([Sum of count])
  from [TargettingReport]
  group by 
  [MLISNPI],[CLIENT_ID1]

the question is how do i get the 2nd and 3rd highest?

here’s some example data:

+---------+------------+--------------+
| MLISNPI | CLIENT_ID1 | sum of count |
+---------+------------+--------------+
|  567890 |     214060 |           18 |
|  678901 |     214060 |           58 |
|  789012 |     214060 |           27 |
|  891012 |     214060 |            1 |
|  101112 |     214060 |           23 |
|  003001 |     101596 |            0 |
|  003001 |     101522 |          436 |
|  003001 |     101597 |            0 |
|  003002 |     102165 |           66 |
|  003002 |     100062 |            1 |
|  003002 |     211074 |         1229 |
|  003006 |     102235 |           21 |
|  003014 |     213926 |            5 |
|  003016 |     213143 |            3 |
|  003023 |     213801 |           55 |
|  003023 |     212876 |           44 |
|  003023 |     100218 |            0 |
|  003028 |     211144 |          133 |
|  003041 |     100236 |          346 |
|  003041 |     103164 |           65 |
|  003051 |     213402 |          157 |
|  003058 |     100572 |           28 |
|  003065 |     101632 |           29 |
|  003071 |     213632 |            6 |
|  003072 |     101506 |            4 |
|  003081 |     100087 |          398 |
|  003083 |     214311 |            7 |
|  003117 |     210178 |          203 |
|  003121 |     214008 |            9 |
|  003139 |     102179 |         1635 |
|  003147 |     216022 |           21 |
|  003149 |     211425 |            1 |
|  003186 |     215748 |            1 |
+---------+------------+--------------+

Answer 1

; with numbered as
(
  select *,
      -- Assign number to each record
      -- Numbering is separate for each pair of MLISNPI and CLIENT_ID1
      -- Highest [Sum of desc] will get number 1 and so forth
         row_number() over (partition by [MLISNPI], [CLIENT_ID1]
                            order by [Sum of count] desc) rn
    from [TargettingReport]
)
select [MLISNPI],
       [CLIENT_ID1], 
       [Sum of count]
  from numbered
-- Now one can filter ranks
 where rn between 2 and 3

UPDATE: pivoting [Sum of count] around mlisnpi

; with numbered as
(
  select mlisnpi,
         [sum of count],
      -- Assign number to each record
      -- Numbering is separate for each MLISNPI
      -- Highest [Sum of desc] will get number 1 and so forth
         row_number() over (partition by [MLISNPI]
                            order by [Sum of count] desc) rn
    from [TargettingReport]
)
select mlisnpi,
       [1] Rank1,
       [2] Rank2,
       [3] Rank3
  from numbered
 pivot (max([Sum of count]) for rn in ([1], [2], [3])) p

Sql Fiddle is here.

In case you actually want Cliend_ID1 instead of [Sum of count], just replace all occurrences of [Sum of count] with Client_ID1. Don’t add Client_ID1 to cte because pivot will include it in results and show each combination of mlisnpi and Client_ID1 in its own row.

UPDATE2: pivoting with title included. A bit more verbose, as you need to union all titles (client_id1) and manipulate row numbers to get correct mix of titles and sums. Also you need to convert all to the same data type (varchar here) to be able to use union all.

; with numbered as
(
  select *,
         row_number() over (partition by [MLISNPI]
                            order by [Sum of count] desc) rn
    from [TargettingReport]
),
unioned as
(
  select mlisnpi,
         convert(varchar(20), [Sum of count]) value,
         rn * 2 rn
    from numbered
   union all
   select mlisnpi,
       convert(varchar(20), [Client_ID1]),
       rn * 2 - 1
    from numbered
)
select mlisnpi,
       [1] Client1,
       [2] Rank1,
       [3] Client2,
       [4] Rank2,
       [5] Client3,
       [6] Rank3
  from unioned
 pivot (max(value) for rn in ([1], [2], [3], [4], [5], [6])) p

Sql Fiddle for this is here.