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How to remove empty rows from a SQL result set

I have a request like this:

SELECT DISTINCT 
    [F_Exhibitor_Name] 
FROM 
    [V_ExhibitorLocation] 
WHERE 
    F_ExhibitionCode ='10996' 
  AND 
    [F_Exhibitor_Name] IS NOT NULL
ORDER BY 
    F_Exhibitor_Name

My first line is blank, which is causing an error in the code. My current result set looks like this:

enter image description here

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2 answers


In SQL Server null

and empty string ( ''

) do not match. If you want to exclude both, you must explicitly check both:



SELECT   DISTINCT [F_Exhibitor_Name]
FROM     [V_ExhibitorLocation] 
WHERE    [F_ExhibitionCode] = '10996' AND
         [F_Exhibitor_Name] IS NOT NULL AND
         [F_Exhibitor_Name] <> ''
ORDER BY [F_Exhibitor_Name]
+4


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I can suggest a trick for mixing IS NOT NULL

ANDs <> ''

like this:



SELECT   DISTINCT 
    F_Exhibitor_Name
FROM     
    V_ExhibitorLocation
WHERE    
    F_ExhibitionCode = '10996' 
  AND
    F_Exhibitor_Name > ''   --or ISNULL(F_Exhibitor_Name, '') <> ''
ORDER BY 
    F_Exhibitor_Name
+1


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