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SQL Server query concat question

Hello all,

If I have 4 fields that are CustomerGroup1, CustomerGroup2, CustomerGroup3, CustomerGroup4.   I want to concat one string with a comma separator.   How do I do this so I don't have an extra comma at the end if for example 3 and 4 is null.
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sbornstein2
Asked:
sbornstein2
1 Solution
 
Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
Give this a whirl..
SELECT 
   CustomerGroup1 + ', ' + 
   CustomerGroup2 + ', ' + 
   CASE WHEN COALESCE(CustomerGroup3, '') <> '' THEN CustomerGroup3 + ', ' END + 
   CASE WHEN COALESCE(CustomerGroup4, '') <> '' THEN CustomerGroup4 END
FROM YourTable

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Brian CroweDatabase AdministratorCommented:
SELECT ISNULL(CustomerGroup1, '') + ISNULL(', ' + CustomerGroup2, '') + ISNULL(', ' + CustomerGroup3, '') + ISNULL(', ' + CustomerGroup4, '')
FROM myTable
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sbornstein2Author Commented:
Thanks I needed all 4 fields to be checking for null.
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