Question

I have scenario where i want the invoice numbers from two tables in csv list. I could accomplish this using Stuff as below:

SELECT
   sopnumbe
  ,custname 
  ,Invoices = 
        STUFF((SELECT DISTINCT ', '+ RTRIM(a.sopnumbe)+', '+ RTRIM(B.sopnumbe)
               FROM 
                  SOP10100  a
                  fULL OUTER JOIN 
                  SOP30200 B
                  ON a.ORIGNUMB =B.ORIGNUMB
               WHERE a.ORIGNUMB =@ordernumb
               FOR XML PATH('')) , 1 , 1 , '' )
FROM SOP10100
WHERE
    SOPNUMBE = @ordernumb

The above query produces right results except for the repetitive invoice numbers in the list. Is there any other way to accomplish this?

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if the result of simple outer join query is:

INV1527157              INV1523836        
INV1527157              INV1526475  

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the result of stuff query:

K08081383206      BACHELOR CONTROLS INC    INV1527157, INV1523836, INV1527157, INV1526475

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INV1527157 gets repeated, i want to get rid of repetition.

Answer 1

You may want to try UNION the results together from A and B, rather than a full outer join:

SELECT ', '+ RTRIM(sopnumbe)
FROM (SELECT sopnumbe FROM SOP10100 a WHERE a.ORIGNUMB = @ordernumb
      UNION
      SELECT sopnumbe FROM SOP30200 b WHERE b.ORIGNUMB = @ordernumb
) RESULT

This will return only the distinct results from both subqueries.