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Join two tables and use PIVOT function

Posted on 2012-04-10
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Last Modified: 2012-04-30
Experts,

This is the first time I've used the PIVOT function in SQL Server. The query below gives me the desired result.

SELECT PATIENTACCOUNT, FACILITYID, [1] AS PRINCPL_DX, [2] AS SEC_DX1, [3] AS SEC_DX2, [4] AS SEC_DX3, [5] AS SEC_DX4
      FROM
            (
            SELECT PATIENTACCOUNT, FACILITYID, ICD9DXSEQUENCE, ICD9DXCODE
            FROM T_ENCOUNTER_ICD9DX
            ) DXCODES
      PIVOT
            (
            MAX(ICD9DXCODE)
            FOR ICD9DXSEQUENCE IN ([1],[2],[3],[4],[5])
            ) AS PVT

I'm wondering if it's possible to join to another table to achieve the result in this example below.
I've been searching a while now and can't seem to find anything that gets me to where I want to go.

I want to join the T_ENCOUNTER_ICD9DX table to a T_ICD9DX_Codes table  ON
ICD9DXCODE column to get the Description of the Codes.

My desired result would be display the columns like ...

PATIENTACCOUNT, FACILITYID, [1] AS PRINCPL_DX, Princ_dx_description, [2] AS SEC_DX1, Sec_dx1_description,...

I've attached a simple create table /  insert values script.

Any help is appreciated.
pivot-setup-table-script.sql
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Question by:jvoconnell
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6 Comments
 
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Expert Comment

by:nishant joshi
ID: 37829052
SELECT PATIENTACCOUNT, FACILITYID, [1] AS PRINCPL_DX, [2] AS SEC_DX1, [3] AS SEC_DX2, [4] AS SEC_DX3, [5] AS SEC_DX4,[6] as SEC_DX5
      FROM
            (
            SELECT PATIENTACCOUNT, FACILITYID, ICD9DXSEQUENCE, ICD9DXCODE,b.description
            FROM T_ENCOUNTER_ICD9DX a join T_ICD9DX_Codes b
             ON a.ICD9DXCODE = b.ICD9DXCODE 
            ) DXCODES 
      PIVOT
            (
            MAX(ICD9DXCODE)
            FOR ICD9DXSEQUENCE IN ([1],[2],[3],[4],[5],[6])
            ) AS PVT 

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regards,
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Author Comment

by:jvoconnell
ID: 37829603
Thank you for the input. This option results in the query returning multiple rows where as the original query returned one. I was hoping it was possible to keep the one row and have the descriptions be on the same line.  Sorry about that, I don't think I was clear. I apologize. For now, I'll just populate a table with the results from the query and then do a second pass and go back and get the descriptions.
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Expert Comment

by:nishant joshi
ID: 37829664
example of cte

http://msdn.microsoft.com/en-us/library/ms186243.aspx

There are too many examples you will find after googling...but i am giving simple one as below.

;with testcte(ID)
as
(select 1
union all
select ID+1 from testcte where ID < 5
)
select * from testcte

as above example will give a result of 1 to 4 and stop for 5.

thanks.
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Expert Comment

by:nishant joshi
ID: 37829709
sry for above solution
might other table having multiple records match so that it will goving more output...
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Accepted Solution

by:
jvoconnell earned 0 total points
ID: 37893457
I wanted to close the loop on this question. From the suggestions, I couldn't get the desired output I wanted. We ended up using multiple queries instead of the PIVOT feature due to time constraints.  I do want to thank you for your time and assistance
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Author Closing Comment

by:jvoconnell
ID: 37909680
Used multiple queries instead of PIVOT feature
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