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Continue until NULL in SQL Server

Hi experts,

I'm using the following to put ';' after each choice in a multi-column query but it's returning NULL even if there are actual results in the first 9 positions but a NULL in Alert10.

SELECT STUFF(
(SELECT  '; '+ SUBSTRING(Alert1,CHARINDEX('^',Alert1)+1,LEN(Alert1))+ '; ' +
 SUBSTRING(Alert2,CHARINDEX('^',Alert2)+1,LEN(Alert2)) + '; ' +
 SUBSTRING(Alert3,CHARINDEX('^',Alert3)+1,LEN(Alert3)) + '; ' +
 SUBSTRING(Alert4,CHARINDEX('^',Alert4)+1,LEN(Alert4)) + '; ' +
 SUBSTRING(Alert5,CHARINDEX('^',Alert5)+1,LEN(Alert5)) + '; ' +
 SUBSTRING(Alert6,CHARINDEX('^',Alert6)+1,LEN(Alert6)) + '; ' +
 SUBSTRING(Alert7,CHARINDEX('^',Alert7)+1,LEN(Alert7)) + '; ' +
 SUBSTRING(Alert8,CHARINDEX('^',Alert8)+1,LEN(Alert8)) + '; ' +
 SUBSTRING(Alert9,CHARINDEX('^',Alert9)+1,LEN(Alert9)) + '; ' +
 SUBSTRING(Alert10,CHARINDEX('^',Alert10)+1,LEN(Alert10))
    FROM tblPatientData
      WHERE CaseNumber = '10163001'
    FOR XML PATH ('')),1,1,'')

I need a query that will stop when it hits or ignore the NULL. I've played with COALESCE but it kept blowing up on me because of syntax errors. So I'm turning to you guys.

Thanks,

JackW9653
0
JackW9653
Asked:
JackW9653
1 Solution
 
BeartlaoiCommented:
Use an ISNULL for each expression:
SELECT STUFF(
(SELECT  '; '+ SUBSTRING(Alert1,CHARINDEX('^',Alert1)+1,LEN(Alert1))+ '; ' + 
 ISNULL(SUBSTRING(Alert2,CHARINDEX('^',Alert2)+1,LEN(Alert2)),'') + '; ' +
 ISNULL(SUBSTRING(Alert3,CHARINDEX('^',Alert3)+1,LEN(Alert3)),'') + '; ' +
 ISNULL(SUBSTRING(Alert4,CHARINDEX('^',Alert4)+1,LEN(Alert4)),'') + '; ' + 
 ISNULL(SUBSTRING(Alert5,CHARINDEX('^',Alert5)+1,LEN(Alert5)),'') + '; ' + 
 ISNULL(SUBSTRING(Alert6,CHARINDEX('^',Alert6)+1,LEN(Alert6)),'') + '; ' +
 ISNULL(SUBSTRING(Alert7,CHARINDEX('^',Alert7)+1,LEN(Alert7)),'') + '; ' +
 ISNULL(SUBSTRING(Alert8,CHARINDEX('^',Alert8)+1,LEN(Alert8)),'') + '; ' + 
 ISNULL(SUBSTRING(Alert9,CHARINDEX('^',Alert9)+1,LEN(Alert9)),'') + '; ' + 
 ISNULL(SUBSTRING(Alert10,CHARINDEX('^',Alert10)+1,LEN(Alert10)),'')
    FROM tblPatientData
      WHERE CaseNumber = '10163001'
    FOR XML PATH ('')),1,1,'')

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0
 
JackW9653Author Commented:
That works, thanks for your quick reply.
0

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