Question

Is there any way to have a CASE SELECT Statement in a PIVOTED Column. My Code is as follows

SELECT PName, [RN], [HA], [LVN], [MSW], [SC] 
FROM 
(
   Query

 ) src 

  pivot
    (
     max(Visits)
    for Discipline in ([RN], [HA], [LVN], [MSW], [SC])
    ) piv

I am getting the output as follows

   Pname        RN         HA          LVN        MSW        SC
    AA        AG-2/W    LO-1/W       NA-1/W     SK-2/W     NO-2/MON
    AA        JL-2/W     NULL         NULL        NULL       NULL

Because there have been 2 RNs assigned to 1 PN I want to summarize the results only in 1 Row and select only 1 value to be displayed in the RN column so that the result is only as follows based on my condition.

    Pname        RN         HA          LVN        MSW        SC
    AA        JL-2/W    LO-1/W       NA-1/W     SK-2/W     NO-2/MON

Answer 1

You’ll have to remove the data AFTER the pivoting, because [RN] itself is subject to a MAX condition, i.e. it is itself a pivot column. Wrap it in a CTE, apply a RowNumber() function and partition correctly, then filter it for just 1 row per partition.

;WITH CTE AS (
    SELECT PName, [RN], [HA], [LVN], [MSW], [SC],
           ROW_NUMBER() OVER (partition by PName order by [RN] ASC) RowNum
    FROM 
    (
       Query

     ) src 

      pivot
        (
         max(Visits)
        for Discipline in ([RN], [HA], [LVN], [MSW], [SC])
        ) piv
)
SELECT *
  FROM CTE
 WHERE RowNum = 1;